Analog Devices MAX98380 User manual

General Description
The MAX98380 is a small, mono Class- audio amplifier
featuring an integrated capacitive boost converter. The
device implements a tripler charge pump-based boost
converter that efficiently delivers up to 4.85W at 1%
TH +N into an 8Ω load. The capacitive boost replaces
the large and expensive inductor required for an inductive
boost with smaller, lower-profile capacitors that reduce the
total PCB solution.
Additionally, as the power-supply voltage varies due to de-
clining battery life, an on-chip limiter ( HT) automatically
optimizes the headroom available to the Class- amplifier
to maintain consistent distortion and listening levels.
Thermal-foldback protection ensures robust behavior
when the thermal limits of the device are reached. When
enabled, it automatically reduces the output power when
the temperature exceeds a user-specified threshold. This
allows for uninterrupted music playback even at high am-
bient temperatures. Traditional thermal protection is also
available in addition to robust overcurrent protection.
The device provides a PCM interface for audio data and
a standard I2C interface for control data communication.
The PCM interface supports audio playback using I2S,
left-justified, and T M audio data formats. A unique clock-
ing structure eliminates the need for an external master
clock for PCM communication. This reduces EMI and pos-
sible board coupling issues in addition to reducing the size
and pin count.
Active emissions-limiting and edge-rate limiting circuitry
greatly reduce EMI. A filterless spread-spectrum modula-
tion scheme eliminates the need for output filtering found
in traditional Class- devices and reduces the component
count of the solution.
The IC is available in a 0.35mm pitch 24-bump wafer-level
package (WLP). It is specified over the extended, -40°C to
+85°C temperature range.
Applications
● Smartphones
● Smart Speakers
● IoT evices
● Tablets
Benefits and Features
● Integrated Capacitive Boost Converter—No Bulky
Inductors
● 3.6W Output Power into 6Ω at VBAT = 3.7V
● 10mW Total Quiescent Power
● 3ms Turn-On Time
● 80% Efficiency (1.0W into RL = 8Ω, VBAT = 3.7V)
● 19.8μVRMS Speaker Mode Output Noise
● 16.5μVRMS Receiver Mode Output Noise
● Low 0.005% TH +N at 1kHz
● No MCLK Required
● Sample Rates of 8kHz to 192kHz
● Supports Left, Right, or (Left/2 + Right/2) Output in I2S
and Left-Justified Modes
● Sophisticated Edge Rate Control Enables Filterless
Class- Outputs
● Low RF Susceptibility Rejects T MA Noise from GSM
Radios
● Class- Switching Frequency Trimmed to 10% for
Better EMI Planning
● Extensive Click-and-Pop Reduction Circuitry
● ynamic Headroom Tracking ( HT)
● Robust Short-Circuit and Thermal Protection
● Available in Space-Saving Package: 1.468mm x
2.138mm, 24-Bump WLP (0.35mm Pitch)
SMBus is a trademark of Intel Corp.
Click here to ask an associate for production status of specific part numbers.
MAX98380 Small, Boosted, Digital Input Class-D Amplifier
EVALUATION KIT AVAILABLE
Ordering Information appears at end of data sheet. 19-101484; Rev 0; 5/22
© 2022 Analog evices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.
One Analog Way, Wilmington, MA 01887 U.S.A. | Tel: [phone] | © 2022 Analog evices, Inc. All rights reserved.
Downloaded from Arrow.com.

Simplified Block Diagram
MAX98380MAX98380
THERMAL
PROTECT ON
/ FOLDBACK
2C CONTROL
NTERFACE
DYNAM C
HEADROOM
TRACK NG
AUD O
NTERFACE DAC CLASS-D
AMPL F ER
CHARGE PUMP
BOOST
SCL
SDA
BCLK
LRCLK
D N
VDD VBAT
PVDD
OUTP
OUTN
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TABLE OF CONTENTS
General escription . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Benefits and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Simplified Block iagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
WLP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Typical Operating Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
MAX98380 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Pin escription . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Functional iagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
etailed Block iagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
etailed escription . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
evice State Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Hardware Shutdown State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Software Shutdown State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Active State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
PCM Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
PCM Clock Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
PCM ata Format Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
I2S/Left-Justified Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
T M Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
PCM ata Path Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
PCM ata Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
PCM Interface Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
evice Status Bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Speaker Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Speaker Path ither . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Speaker Path ata Inversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Speaker Path C Blocking Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Speaker Path igital Volume Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Speaker Safe Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Speaker Path Maximum Peak Output Voltage Scaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
AC igital Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
ynamic Headroom Tracking ( HT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
HT Supply Tracking and Headroom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
HT Mode 1—Signal istortion Limiter (S L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
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TABLE OF CONTENTS (CONTINUED)
HT Mode 2—Signal Level Limiter (SLL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
HT Attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
HT Ballistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Charge Pump Boost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Speaker Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Class- Output Short-Circuit Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Click-and-Pop Suppression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Ultra-Low EMI Filterless Output Stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Measurement A C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Measurement A C Thermal Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Measurement A C PV Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Thermal Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Thermal Warning and Thermal Shutdown Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Thermal Shutdown Recovery Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Thermal Foldback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
I2C Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Slave Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Bit Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
START and STOP Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Early STOP Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Write ata Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Read ata Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
I2C Register Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Control Bit Field Types and Write Access Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Register Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Register Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Register etails . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Applications Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Layout and Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Recommended External Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Typical Application Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Typical Applications Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
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LIST OF FIGURES
Figure 1. Standard I2S Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 2. Left-Justified Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 3. Left-Justified Mode (LRCLK Inverted) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 4. Left-Justified Mode (BCLK Inverted) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 5. T M Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 6. PCM ata Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 7. PCM Interface Timing/Slave Mode—LRCLK, BCLK, IN Timing iagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 8. Speaker Amplifier Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 9. Simplified ynamic Headroom Tracking System Block iagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 10. VTPO and ATPO Calculation Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 11. Signal istortion Limiter with VMPO ≤ VSUP and +20% Headroom (SUPHR) . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 12. Signal istortion Limiter with VMPO ≤ VSUP and 0% Headroom (SUPHR) . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure 13. Signal istortion Limiter with VMPO ≤ VSUP and -20% Headroom (SUPHR) . . . . . . . . . . . . . . . . . . . . . . . . 41
Figure 14. Signal istortion Limiter with VMPO > VSUP and +20% Headroom (SUPHR) . . . . . . . . . . . . . . . . . . . . . . . . 42
Figure 15. Signal istortion Limiter with VMPO > VSUP and 0% Headroom (SUPHR) . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Figure 16. Signal istortion Limiter with VMPO > VSUP and -20% Headroom (SUPHR) . . . . . . . . . . . . . . . . . . . . . . . . 43
Figure 17. Signal Level Limiter with VTPO > VSLL as VSUP ecreases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Figure 18. Signal Level Limiter with VTPO < VSLL Showing Amplifier Output Clipping . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Figure 19. istortion Limiter Case with -20% Headroom and AMAX Exceeded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Figure 20. istortion Limiter Case with +20% Headroom and AMAX Exceeded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Figure 21. I2C Interface Timing iagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Figure 22. I2C START, STOP, and REPEATE START Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Figure 23. I2C Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Figure 24. I2C Writing One Byte of ata to the Slave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Figure 25. I2C Writing n-Bytes of ata to the Slave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Figure 26. I2C Reading One Byte of ata from the Slave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Figure 27. I2C Reading n-Bytes of ata from the Slave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
MAX98380 Small, Boosted, igital Input Class- Amplifier
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LIST OF TABLES
Table 1. Supported I2S/Left-Justified Mode Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 2. Supported T M Mode Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Table 3. Status Bit Event Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Table 4. Charge Pump Soft Timer Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Table 5. I2C Slave Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Table 6. Control Bit Types and Write Access Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Table 7. Component List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
MAX98380 Small, Boosted, igital Input Class- Amplifier
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Absolute Maximum Ratings
VBAT to PGN .......................................................... -0.3V to +6V
V, RESET, A R, SCL, S A, BCLK, LRCLK, and IN to
GN ....................................................................... -0.3V to +2.2V
PV to PGN ..............CPBYP - 0.3V to min(CPBYP + 6, 16)V
CPBYP to PGN ................... VBAT - 0.3V to min(VBAT + 6, 12)V
GN to PGN ....................................................... -0.1V to +0.1V
uration of OUTP or OUTN short circuit to PGN , PV , or
VBAT ........................................................................... Continuous
uration of OUTP short to OUTN ...............................Continuous
Continuous power dissipation (TA = +70°C) WLP (derate
18.87mW/°C above +70°C) ................................................1.51W
Junction temperature ........................................................ +150°C
Operating temperature range ................................-40°C to +85°C
Storage temperature range .................................-65°C to +150°C
Soldering temperature (reflow) .........................................+260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the
device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability.
Package Information
WLP
Package Code W241J2+1
Outline Number 21-100569
Land Pattern Number Refer to Application Note 1891
Thermal Resistance, Four-Layer Board:
Junction-to-Ambient (θJA) 53°C/W
Junction-to-Case Thermal Resistance (θJC) N/A
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages.
Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different
suffix character, but the drawing pertains to the package regardless of RoHS status.
Package thermal resistances were obtained using the method described in JE EC specification JES 51-7, using a
four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/
thermal-tutorial.
Electrical Characteristics
(VBAT = 3.7V, VV = 1.8V, VGN = 0V, VPGN = 0V, CVBAT = 1 x 10µF, 1 x 0.1µF, CV = 1µF, CPV = 2 x 10µF, 1 x 0.1µF,
CCPBYP = 2 x 2.2µF, 1 x 0.1µF, CCP1 = 2 x 2.2µF, CCP2 = 2 x 2.2µF, fBCLK = 3.072MHz, fLRCLK = 48kHz, ZSPK = ∞ between OUTP
and OUTN, AC Measurement Bandwidth = 20Hz to 20kHz, TA = TMIN to TMAX, typical values are at TA = +25°C) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SYSTEM
VBAT Supply Voltage
Operating Range VBAT Guaranteed by PSRR test 3.0 5.5 V
VBAT Supply Voltage VBAT evice is functional but parametric
performance is not guaranteed 2.5 V
V Supply Voltage
Range V Guaranteed by PSRR test 1.71 1.8 1.89 V
VBAT Undervoltage
Lockout VUVLO
VBAT rising 2.6 2.8 V
VBAT falling 2.3 2.5
Quiescent Power PQ
TA = +25°C, BST_BYPASS_MO E = 0 30 mW
TA = +25°C, BST_BYPASS_MO E = 1 10
MAX98380 Small, Boosted, igital Input Class- Amplifier
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Electrical Characteristics (continued)
(VBAT = 3.7V, VV = 1.8V, VGN = 0V, VPGN = 0V, CVBAT = 1 x 10µF, 1 x 0.1µF, CV = 1µF, CPV = 2 x 10µF, 1 x 0.1µF,
CCPBYP = 2 x 2.2µF, 1 x 0.1µF, CCP1 = 2 x 2.2µF, CCP2 = 2 x 2.2µF, fBCLK = 3.072MHz, fLRCLK = 48kHz, ZSPK = ∞ between OUTP
and OUTN, AC Measurement Bandwidth = 20Hz to 20kHz, TA = TMIN to TMAX, typical values are at TA = +25°C) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Quiescent Current IQ_VBAT
TA = +25°C, VBAT,
BST_BYPASS_MO E = 0 7.2
mA TA = +25°C, VBAT,
BST_BYPASS_MO E = 1 1.5
IQ_V TA = +25°C, V 2.8
VBAT Hardware
Shutdown Current
IVBAT_HW_SH
N TA = +25°C 0.3 1.0 µA
V Hardware
Shutdown Current
IV _HW_SH
N TA = +25°C 0.1 1 µA
VBAT Software
Shutdown Current
IVBAT_SW_SH
N TA = +25°C 0.3 1.0 µA
V Software Shutdown
Current
IV _SW_SH
N TA = +25°C 1.4 2.5 µA
Turn-On Time tON
Software Shutdown to full gain audio out,
volume ramp disabled 2 3
ms
Software Shutdown to full gain audio out,
volume ramp enabled 5.5 6.5
From SPK_EN bit set to 1 to full
operation, volume ramp disabled 0.75
Turn-Off Time tOFF
From full operation to software shutdown
(RESET = V ), volume ramp disabled 30 100 µs
From full operation to software shutdown
(RESET = V ), fS ≤ 44.1kHz, volume
ramp enabled
8.4 10.5
ms
From full operation to software shutdown
(RESET = V ), fS > 44.1kHz, volume
ramp enabled
6 6.5
From SPK_EN bit set to 0 to amplifier
disabled, volume ramp disabled 0.025 ms
System Efficiency η
f = 1kHz, ZSPK =
6Ω + 33µH
POUT = 1.0W,
BST_BYPASS_MO
E = 0
80
%
POUT = 1.0W,
BST_BYPASS_MO
E = 1
87
f = 1kHz, ZSPK =
8Ω + 33µH
POUT = 1.0W,
BST_BYPASS_MO
E = 0
80
POUT = 0.8W,
BST_BYPASS_MO
E = 1
88
CHARGE PUMP BOOST CONVERTER
Maximum Soft-Start
Time tSTR CP_SOFT_TIMER = 0x3, nominal caps (2x2.2μF/2x2.2μF) 1.725 ms
MAX98380 Small, Boosted, igital Input Class- Amplifier
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Electrical Characteristics (continued)
(VBAT = 3.7V, VV = 1.8V, VGN = 0V, VPGN = 0V, CVBAT = 1 x 10µF, 1 x 0.1µF, CV = 1µF, CPV = 2 x 10µF, 1 x 0.1µF,
CCPBYP = 2 x 2.2µF, 1 x 0.1µF, CCP1 = 2 x 2.2µF, CCP2 = 2 x 2.2µF, fBCLK = 3.072MHz, fLRCLK = 48kHz, ZSPK = ∞ between OUTP
and OUTN, AC Measurement Bandwidth = 20Hz to 20kHz, TA = TMIN to TMAX, typical values are at TA = +25°C) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Startup Input Current
Limit ISTARTUP 0.5 A
Switching Frequency fSW 0.998 1.024 1.05 MHz
Output Voltage VPV
VBAT = 3.0V to 4.5V,
BST_BYPASS_MO E = 0 3 x VBAT
V VBAT > 4.5V, BST_BYPASS_MO E = 0 13.5
VBAT = 3.0V to 5.5V,
BST_BYPASS_MO E = 1 VBAT
Overvoltage Protection OVP Rising edge 15 15.5 16 V
Falling edge 14.9 15.4 15.8
CLASS-D AMPLIFIER
Output Offset Voltage VOS TA = +25°C -3.0 ±0.3 +3.0 mV
Click-and-Pop Level KCP
Peak voltage, A-weighted, 32 samples
per second, digital silence used for input
signal, ZSPK = 8Ω + 33μH or 6Ω + 33μH,
into Standby or Shutdown
-66
dBV
Peak voltage, A-weighted, 32 samples
per second, digital silence used for input
signal, ZSPK = 8Ω + 33μH or 6Ω + 33μH,
out of Standby or Shutdown
-66
VBAT Supply Rejection
C PSRR
TA = +25°C, digital silence used for input
signal, ZSPK = ∞, C, VVBAT = 3.0V to
5.5V
63 80 dB
VBAT Supply Rejection
AC PSRR VRIPPLE = 200mVPP
fRIPPLE = 217Hz,
TA = +25°C, digital
silence used for
input signal, ZSPK
= 8Ω + 33μH or 6Ω
+ 33μH
75
dB
fRIPPLE = 1kHz, TA
= +25°C, digital
silence used for
input signal, ZSPK
= 8Ω + 33μH or 6Ω
+ 33μH
75
fRIPPLE = 10kHz,
TA = +25°C, digital
silence used for
input signal, ZSPK
= 8Ω + 33μH or 6Ω
+ 33μH
75
V Supply Rejection
C PSRR
TA = +25°C, digital silence used for input
signal, ZSPK = ∞, C, V = 1.71V to
1.89V
60 83 dB
MAX98380 Small, Boosted, igital Input Class- Amplifier
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Electrical Characteristics (continued)
(VBAT = 3.7V, VV = 1.8V, VGN = 0V, VPGN = 0V, CVBAT = 1 x 10µF, 1 x 0.1µF, CV = 1µF, CPV = 2 x 10µF, 1 x 0.1µF,
CCPBYP = 2 x 2.2µF, 1 x 0.1µF, CCP1 = 2 x 2.2µF, CCP2 = 2 x 2.2µF, fBCLK = 3.072MHz, fLRCLK = 48kHz, ZSPK = ∞ between OUTP
and OUTN, AC Measurement Bandwidth = 20Hz to 20kHz, TA = TMIN to TMAX, typical values are at TA = +25°C) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V Supply Rejection
AC PSRR VRIPPLE = 200mVPP
fRIPPLE = 217Hz,
TA = +25°C, digital
silence used for
input signal, ZSPK
= 8Ω + 33μH or 6Ω
+ 33μH
89
dB
fRIPPLE = 1kHz, TA
= +25°C, digital
silence used for
input signal, ZSPK
= 8Ω + 33μH or 6Ω
+ 33μH
87
fRIPPLE = 10kHz,
TA = +25°C, digital
silence used for
input signal, ZSPK
= 8Ω + 33μH or 6Ω
+ 33μH
75
Output Power POUT
VBAT = 3.7V,
TH +N ≤ 10%,
ZSPK = 6Ω + 33µH
BST_BYPASS_MO
E = 0 4.2
W
VBAT = 3.7V,
TH +N ≤ 1%,
ZSPK = 6Ω + 33µH
BST_BYPASS_MO
E = 0 3.6
BST_BYPASS_MO
E = 1 0.88
VBAT = 3.7V,
TH +N ≤ 10%,
ZSPK = 6Ω + 33µH
BST_BYPASS_MO
E = 1 1.1
VBAT = 4.4V,
TH +N ≤ 1%,
ZSPK = 8Ω + 33µH
BST_BYPASS_MO
E = 0 4.85
VBAT = 3.7V,
TH +N ≤ 10%,
ZSPK = 8Ω + 33µH
BST_BYPASS_MO
E = 0 4.1
Total Harmonic
istortion + Noise TH +N f = 1kHz, TA = +25°C
POUT = 1W, ZSPK
= 6Ω + 33µH, (Note
3)
-86
dB
POUT = 1W, ZSPK
= 8Ω + 33µH -85
POUT = 500mW,
ZSPK = 6Ω + 33µH,
BST_BYPASS_MO
E = 1
-85
Intermodulation
istortion IM ITU-R, 19kHz/20kHz, 1:1, VIN = -3dBFS, ZSPK = 8Ω + 33μH -60 dB
MAX98380 Small, Boosted, igital Input Class- Amplifier
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Electrical Characteristics (continued)
(VBAT = 3.7V, VV = 1.8V, VGN = 0V, VPGN = 0V, CVBAT = 1 x 10µF, 1 x 0.1µF, CV = 1µF, CPV = 2 x 10µF, 1 x 0.1µF,
CCPBYP = 2 x 2.2µF, 1 x 0.1µF, CCP1 = 2 x 2.2µF, CCP2 = 2 x 2.2µF, fBCLK = 3.072MHz, fLRCLK = 48kHz, ZSPK = ∞ between OUTP
and OUTN, AC Measurement Bandwidth = 20Hz to 20kHz, TA = TMIN to TMAX, typical values are at TA = +25°C) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Output Noise eNd A-weighted, 24-bit
or 32-bit data
BST_BYPASS_MO
E = 0 19.8
µVRMS
BST_BYPASS_MO
E = 1 16.5
ynamic Range R
A-weighted, -60dB
1kHz output signal,
normalized to full
scale (TH +N =
1%), 24- or 32-bit
data TA = +25°C
BST_BYPASS_MO
E = 0 -108
dB
A-weighted, -60dB
1kHz output signal,
normalized to full
scale (TH +N =
1%), 24- or 32-bit
data, TA = +25°C
BST_BYPASS_MO
E = 1 -103
Full-Scale Output
Voltage FS BST_BYPASS_MO E = 0 13.4 dBV
BST_BYPASS_MO E = 1 1.67
Output Current Limit ILIM 2.7 A
Output Current Limit
Auto-Restart Time 27 ms
Frequency Response -0.2 +0.3 dB
Class- Switching
Frequency fSW 270 300 315 kHz
Spread-Spectrum
Bandwidth fSSM ±14 kHz
Minimum Load
Resistance RL 6 Ω
Maximum evice to
evice Phase Error
Output phase shift between multiple
devices from 20Hz to 20kHz across all
sample rates and AI operating modes
3 deg
DAC DIGITAL FILTER (LRCLK < 50kHz)
Passband Cutoff
fPLP Ripple < δP 0.452 x
fS Hz
roop < -3dB 0.457 x
fS Hz
Passband Ripple δP f < fPLP, referenced to signal level at
1kHz -0.1 +0.1 dB
Stopband Cutoff fSLP Attenuation > δS 0.49 x fS Hz
Stopband Attenuation δS f > fSLP 75 dB
Group elay f = 1kHz 5 samples
MAX98380 Small, Boosted, igital Input Class- Amplifier
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Electrical Characteristics (continued)
(VBAT = 3.7V, VV = 1.8V, VGN = 0V, VPGN = 0V, CVBAT = 1 x 10µF, 1 x 0.1µF, CV = 1µF, CPV = 2 x 10µF, 1 x 0.1µF,
CCPBYP = 2 x 2.2µF, 1 x 0.1µF, CCP1 = 2 x 2.2µF, CCP2 = 2 x 2.2µF, fBCLK = 3.072MHz, fLRCLK = 48kHz, ZSPK = ∞ between OUTP
and OUTN, AC Measurement Bandwidth = 20Hz to 20kHz, TA = TMIN to TMAX, typical values are at TA = +25°C) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DAC DIGITAL FILTER (LRCLK > 50kHz)
Passband Cutoff
fPLP Ripple < δP, 88.2kHz ≤ fS ≤ 96kHz 0.227 x
fS Hz
roop < -3dB, 88.2kHz ≤ fS ≤ 96kHz 0.314 x
fS Hz
fPLP Ripple < δP, 176.4kHz ≤ fS ≤ 192kHz 0.1135 x
fS Hz
roop < -3dB cutoff, 176.4kHz ≤ fS ≤
192kHz
0.232 x
fS Hz
Passband Ripple δP f < fPLP, referenced to signal level at
1kHz -0.25 +0.25 dB
Stopband Cutoff fSLP Attenuation < δS 0.495 x
fS Hz
Stopband Attenuation δS f > fSLP 75 dB
Max Group elay f = 1kHz 5.5 samples
DAC DIGITAL FILTERS/DIGITAL DC BLOCKING FILTER
C Attenuation 80 dB
C Blocking Filter -3dB
Cutoff Frequency fC
For fs = 8kHz, 16kHz, 32kHz, 48kHz,
96kHz, and 192kHz 1.872 Hz
For fs = 44.1kHz, 88.2kHz 1.72
DIGITAL I/O / INPUT—DIN, BCLK, LRCLK
Input Voltage High VIH 0.7 x
VV V
Input Voltage Low VIL 0.3 x
VV V
Input Leakage Current -1 +1 µA
Input Hysteresis VHYS Note 3 75 mV
Maximum Input
Capacitance CIN 10 pF
Internal Pulldown
Resistance RP BCLK, LRCLK and IN 3 MΩ
DIGITAL I/O / INPUT—RESET
Input Voltage High VIH 0.75 x
VV V
Input Voltage Low VIL 0.25 x
VV V
Input Leakage Current -1 +1 µA
Input Hysteresis VHYS Note 3 75 mV
Maximum Input
Capacitance CIN 10 pF
MAX98380 Small, Boosted, igital Input Class- Amplifier
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Electrical Characteristics (continued)
(VBAT = 3.7V, VV = 1.8V, VGN = 0V, VPGN = 0V, CVBAT = 1 x 10µF, 1 x 0.1µF, CV = 1µF, CPV = 2 x 10µF, 1 x 0.1µF,
CCPBYP = 2 x 2.2µF, 1 x 0.1µF, CCP1 = 2 x 2.2µF, CCP2 = 2 x 2.2µF, fBCLK = 3.072MHz, fLRCLK = 48kHz, ZSPK = ∞ between OUTP
and OUTN, AC Measurement Bandwidth = 20Hz to 20kHz, TA = TMIN to TMAX, typical values are at TA = +25°C) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DIGITAL I/O / INPUT—SCL, SDA, ADDR
Input Voltage High VIH 0.7 x
VV V
Input Voltage Low VIL 0.3 x
VV V
Input Leakage Current TA = +25°C, input high -1 +1 µA
Input Hysteresis VHYS Note 3 75 mV
Maximum Input
Capacitance CIN 10 pF
DIGITAL I/O / OPEN DRAIN OUTPUT—SDA
Output Voltage Low VOL ISINK = 3mA 0.4 V
Output High Leakage
Current IOH TA = +25°C -1 +1 µA
PCM AUDIO INTERFACE TIMING
BCLK Frequency Range fBCLK
I2S/left-justified modes 0.256 12.288 MHz
T M mode 0.256 24.576
BCLK uty Cycle C 45 55 %
BCLK Period tBCLK
I2S/left-justified only 81.3 ns
T M mode 40
Maximum BCLK Input
Low-Frequency Jitter
Maximum allowable jitter before a
-20dBFS, 20kHz input has a 1dB
reduction in TH +N,
RMS jitter ≤ 40kHz
0.2 ns
Maximum BCLK Input
High-Frequency Jitter
Maximum allowable jitter before a
-60dBFS, 20kHz input has a 1dB
reduction in TH +N,
RMS jitter > 40kHz
1 ns
PCM AUDIO INTERFACE TIMING / INTERFACE TIMING
LRCLK to BCLK Active
Edge Setup Time tSYNCSET 4 ns
LRCLK to BCLK Active
Edge Hold Time tSYNCHOL 4 ns
IN to BCLK Active
Edge Setup Time tSETUP 4 ns
IN to BCLK Active
Edge Hold Time tHOL 4 ns
IN Frame elay After
LRCLK Edge
Measured in number of BCLK cycles, set
by selected T M mode 0 2 cycles
I2C INTERFACE TIMING
Serial Clock Frequency fSCL 1000 kHz
Bus Free Time Between
STOP and START
Conditions
tBUF 0.5 µs
MAX98380 Small, Boosted, igital Input Class- Amplifier
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Electrical Characteristics (continued)
(VBAT = 3.7V, VV = 1.8V, VGN = 0V, VPGN = 0V, CVBAT = 1 x 10µF, 1 x 0.1µF, CV = 1µF, CPV = 2 x 10µF, 1 x 0.1µF,
CCPBYP = 2 x 2.2µF, 1 x 0.1µF, CCP1 = 2 x 2.2µF, CCP2 = 2 x 2.2µF, fBCLK = 3.072MHz, fLRCLK = 48kHz, ZSPK = ∞ between OUTP
and OUTN, AC Measurement Bandwidth = 20Hz to 20kHz, TA = TMIN to TMAX, typical values are at TA = +25°C) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Hold Time (Repeated)
START Condition tH ,STA 0.26 µs
SCL Pulse-Width Low tLOW 0.5 µs
SCL Pulse-Width High tHIGH 0.26 µs
Setup Time for a
Repeated START
Condition
tSU,STA 0.26 µs
ata Hold Time tH , AT 0 450 ns
ata Setup Time tSU, AT 50 ns
S A and SCL Receiving
Rise Time tR 20 120 ns
S A and SCL Receiving
Fall Time tF
20 x
V/5.5
V
120 ns
S A Transmitting Fall
Time tF
20 x
V/5.5
V
120 ns
Setup Time for STOP
Condition tSU,STO 0.26 µs
Bus Capacitance CB 550 pF
Pulse Width of
Suppressed Spike tSP 0 50 ns
THERMAL PROTECTION
Thermal Shutdown
Trigger Point THERMSH N_THRESH = 0x64 140 150 160 °C
RESET TIMING
RESET Low tRESET_LOW Minimum low time for RESET to ensure
device enters hardware shutdown 7.5 µs
Release from RESET tI2C_REA Y
Time from RESET = 1 to I2C
communication available (software
shutdown)
1.5 ms
Note 1: Limits are 100% tested at TA = +25°C. Limits over the operating temperature range and relevant supply voltage range are
guaranteed by design and characterization.
Note 2: See the Digital Audio Interface Configuration and Valid Clock Frequencies sections for more information.
Note 3: Minimum and/or maximum limit is guaranteed by design and by statistical analysis of device characterization data. The
specification is not guaranteed by production testing.
MAX98380 Small, Boosted, igital Input Class- Amplifier
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Typical Operating Characteristics
(VBAT = 3.7V, VV = 1.8V, VGN = 0V, VPGN = 0V, CVBAT = 1 x 10μF, 1 x 0.1μF, CV = 1μF, CPV = 2 x 10μF, 1 x 0.1μF,
CCPBYP = 2 x 2.2μF, 1 x 0.1μF, CCP1 = 2 x 2.2μF, CCP2 = 2 x 2.2μF, fBCLK = 3.072MHz, fLRCLK = 48kHz, ZSPK = ∞ between OUTP
and OUTN, AC Measurement Bandwidth = 20Hz to 20kHz, TA = TMIN to TMAX, typical values are at TA = +25°C) )
0
2
4
6
8
10
12
14
16
18
20
3.0 3.5 4.0 4.5 5.0 5.5
VBAT QU ESCENT CURRENT (mA)
VBAT SUPPLY VOLTAGE (V)
D N = 0V
SPEAKER UNLOADED
BST_BYP_MODE = 0
BST_BYP_MODE = 1
VVBATBAT QU ESCENT CURRENT vs. VQU ESCENT CURRENT vs. VBATBAT
SUPPLY VOLTAGESUPPLY VOLTAGE
toc1
0
100
200
300
400
500
600
700
800
900
1000
3.0 3.5 4.0 4.5 5.0 5.5
VBAT STANDBY CURRENT (nA)
VBAT SUPPLY VOLTAGE (V)
ALL DA P NS AT 0V
RESET = 1.8V
SPEAKER UNLOADED
VVBATBAT STANDBY CURRENTSTANDBY CURRENT
vs. Vvs. VBATBAT SUPPLY VOLTAGESUPPLY VOLTAGE
toc2
0
100
200
300
400
500
600
700
800
900
1000
3.0 3.5 4.0 4.5 5.0 5.5
VBAT SHUTDOWN CURRENT (nA)
VBAT SUPPLY VOLTAGE (V)
SPEAKER UNLOADED
RESET = 0V
toc3
VVBATBAT SHUTDOWN CURRENTSHUTDOWN CURRENT
vs. Vvs. VBATBAT SUPPLY VOLTAGESUPPLY VOLTAGE
0
1
2
3
4
5
6
7
8
9
10
1.70 1.75 1.80 1.85 1.90
VDD QU ESCENT CURRENT (mA)
VDD SUPPLY VOLTAGE (V)
D N = 0V
SPK UNLOADED
BST_BYP_MODE = 0
BST_BYP_MODE = 1
VVDDDD QUE SCENT CURRENTQUE SCENT CURRENT
vs. Vvs. VDDDD SUPPLY VOLTAGESUPPLY VOLTAGE
toc4
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
1.70 1.75 1.80 1.85 1.90
VDD STANDBY CURRENT (uA)
VDD SUPPLY VOLTAGE (V)
DA N = 0V
VVDDDD STANDBY CURRENTSTANDBY CURRENT
vs. Vvs. VDDDD SUPPLY VOLTAGESUPPLY VOLTAGE
toc5
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.70 1.75 1.80 1.85 1.90
VDD SHUTDOWN CURRENT (uA)
VDD SUPPLY VOLTAGE (V)
RESET = 0V
VVDDDD SHUTDOWN CURRENTSHUTDOWN CURRENT
vs. Vvs. VDDDD SUPPLY VOLTAGESUPPLY VOLTAGE
toc6
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.001 0.01 0.1 1 10
THD+N (dB)
OUTPUT POWER (W)
VBAT = 3.7V
ZSPK = 6Ω + 33µH
DEFAULT CAPAC TORS
f = 100Hz
f = 1kHz
f = 6kHz
TOTAL HARMON CTOTAL HARMON C D STORT OND STORT ON
PLUS NO SEPLUS NO SE vs. OUTPUT POWERvs. OUTPUT POWER
toc7
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.001 0.01 0.1 1 10
THD+N (dB)
OUTPUT POWER (W)
VBAT = 3.7V
ZSPK = 8Ω + 33µH
DEFAULT CAPAC TORS
f = 100Hz
f = 1kHz
f = 6kHz
TOTAL HARMON C D STORT ONTOTAL HARMON C D STORT ON
PLUS NO SEPLUS NO SE vs. OUTPUT POWERvs. OUTPUT POWER
toc8
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.001 0.01 0.1 1 10
THD+N (dB)
OUTPUT POWER (W)
VBAT = 4.4V
ZSPK = 6Ω + 33µH
DEFAULT CAPAC TORS
f = 100Hz
f = 1kHz
f = 6kHz
TOTAL HARMON C D STORT ONTOTAL HARMON C D STORT ON
PLUS NO SE vs. OUTPUT POWERPLUS NO SE vs. OUTPUT POWER
toc9
MAX98380 Small, Boosted, igital Input Class- Amplifier
www.analog.com Analog evices | 15
Downloaded from Arrow.com.

Typical Operating Characteristics (continued)
(VBAT = 3.7V, VV = 1.8V, VGN = 0V, VPGN = 0V, CVBAT = 1 x 10μF, 1 x 0.1μF, CV = 1μF, CPV = 2 x 10μF, 1 x 0.1μF,
CCPBYP = 2 x 2.2μF, 1 x 0.1μF, CCP1 = 2 x 2.2μF, CCP2 = 2 x 2.2μF, fBCLK = 3.072MHz, fLRCLK = 48kHz, ZSPK = ∞ between OUTP
and OUTN, AC Measurement Bandwidth = 20Hz to 20kHz, TA = TMIN to TMAX, typical values are at TA = +25°C) )
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.001 0.01 0.1 1 10
THD+N (dB)
OUTPUT POWER (W)
VBAT = 4.4V
ZSPK = 8Ω + 33µH
DEFAULT CAPAC TORS
f = 100Hz
f = 1kHz
f = 6kHz
TOTAL HARMON C D STORT ONTOTAL HARMON C D STORT ON
PLUS NO SE vs. OUTPUT POWERPLUS NO SE vs. OUTPUT POWER
toc10
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.001 0.01 0.1 1 10
THD+N (dB)
OUTPUT POWER (W)
VBAT = 3.7V
ZSPK = 6Ω + 33µH
DOUBLE FLY NG CAPAC TORS
f = 100Hz
f = 1kHz
f = 6kHz
TOTAL HARMON C D STORT ONTOTAL HARMON C D STORT ON
PLUS NO SE vs. OUTPUT POWERPLUS NO SE vs. OUTPUT POWER
toc11
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.001 0.01 0.1 1 10
THD+N (dB)
OUTPUT POWER (W)
VBAT = 3.7V
ZSPK = 8Ω + 33µH
DOUBLE FLY NG CAPAC TORS
f = 100Hz
f = 1kHz
f = 6kHz
TOTAL HARMON C D STORT ONTOTAL HARMON C D STORT ON
PLUS NO SE vs. OUTPUT POWERPLUS NO SE vs. OUTPUT POWER
toc12
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.001 0.01 0.1 1 10
THD+N (dB)
OUTPUT POWER (W)
VBAT = 4.4V
ZSPK = 6Ω + 33µH
DOUBLE FLY NG CAPAC TORS
f = 100Hz
f = 1kHz
f = 6kHz
TOTAL HARMON C D STORT ONTOTAL HARMON C D STORT ON
PLUS NO SE vs. OUTPUT POWERPLUS NO SE vs. OUTPUT POWER
toc13
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.001 0.01 0.1 1 10
THD+N (dB)
OUTPUT POWER (W)
VBAT = 4.4V
ZSPK = 8Ω + 33µH
DOUBLE FLY NG CAPAC TORS
f = 100Hz
f = 1kHz
f = 6kHz
TOTAL HARMON C D STORT ONTOTAL HARMON C D STORT ON
PLUS NO SE vs. OUTPUT POWERPLUS NO SE vs. OUTPUT POWER
toc14
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.001 0.01 0.1 1 10
THD+N (dB)
OUTPUT POWER (W)
VBAT = 3.7V
ZSPK = 6Ω + 33µH
OVERS ZED CAPAC TORS
f = 100Hz
f = 1kHz
f = 6kHz
TOTAL HARMON C D STORT ONTOTAL HARMON C D STORT ON
PLUS NO SE vs. OUTPUT POWERPLUS NO SE vs. OUTPUT POWER
toc15
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.001 0.01 0.1 1 10
THD+N (dB)
OUTPUT POWER (W)
VBAT = 3.7V
ZSPK = 8Ω + 33µH
OVERS ZED CAPAC TORS
f = 100Hz
f = 1kHz
f = 6kHz
TOTAL HARMON C D STORT ONTOTAL HARMON C D STORT ON
PLUS NO SE vs. OUTPUT POWERPLUS NO SE vs. OUTPUT POWER
toc16
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.001 0.01 0.1 1 10
THD+N (dB)
OUTPUT POWER (W)
VBAT = 4.4V
ZSPK = 6Ω + 33µH
OVERS ZED CAPAC TORS
f = 100Hz
f = 1kHz
f = 6kHz
TOTAL HARMON C D STORT ONTOTAL HARMON C D STORT ON
PLUS NO SE vs. OUTPUT POWERPLUS NO SE vs. OUTPUT POWER
toc17
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.001 0.01 0.1 1 10
THD+N (dB)
OUTPUT POWER (W)
VBAT = 4.4V
ZSPK = 8Ω + 33µH
OVERS ZED CAPAC TORS
f = 100Hz
f = 1kHz
f = 6kHz
TOTAL HARMON C D STORT ONTOTAL HARMON C D STORT ON
PLUS NO SE vs. OUTPUT POWERPLUS NO SE vs. OUTPUT POWER
toc18
MAX98380 Small, Boosted, igital Input Class- Amplifier
www.analog.com Analog evices | 16
Downloaded from Arrow.com.

Typical Operating Characteristics (continued)
(VBAT = 3.7V, VV = 1.8V, VGN = 0V, VPGN = 0V, CVBAT = 1 x 10μF, 1 x 0.1μF, CV = 1μF, CPV = 2 x 10μF, 1 x 0.1μF,
CCPBYP = 2 x 2.2μF, 1 x 0.1μF, CCP1 = 2 x 2.2μF, CCP2 = 2 x 2.2μF, fBCLK = 3.072MHz, fLRCLK = 48kHz, ZSPK = ∞ between OUTP
and OUTN, AC Measurement Bandwidth = 20Hz to 20kHz, TA = TMIN to TMAX, typical values are at TA = +25°C) )
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.01 0.1 1 10 100
THD+N (dB)
FREQUENCY (kHz)
VBAT = 3.7V
ZSPK = 6Ω + 33µH
BST_BYP_MODE = 1
440mW
87mW
TOTAL HARMON C D STORT ONTOTAL HARMON C D STORT ON
PLUS NO SE vs. FREQUENCYPLUS NO SE vs. FREQUENCY
toc19
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.01 0.1 1 10 100
THD+N (dB)
FREQUENCY (kHz)
VBAT = 3.7V
ZSPK = 8Ω + 33µH
BST_BYP_MODE = 1
350mW
70mW
TOTAL HARMON C D STORT ONTOTAL HARMON C D STORT ON
PLUS NO SEPLUS NO SE vs. FREQUENCYvs. FREQUENCY
toc20
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.01 0.1 1 10 100
THD+N (dB)
FREQUENCY (kHz)
VBAT = 3.7V
ZSPK = 6Ω + 33µH
BST_BYP_MODE = 0
2.1W
510mW
TOTAL HARMON C D STORT ONTOTAL HARMON C D STORT ON
PLUS NO SE vs. FREQUENCYPLUS NO SE vs. FREQUENCY
toc21
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.01 0.1 1 10 100
THD+N (dB)
FREQUENCY (kHz)
VBAT = 3.7V
ZSPK = 8Ω + 33µH
BST_BYP_MODE = 0
1.9W
490mW
TOTAL HARMON C D STORT ONTOTAL HARMON C D STORT ON
PLUS NO SEPLUS NO SE vs. FREQUENCYvs. FREQUENCY
toc22
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.01 0.1 1 10 100
THD+N (dB)
FREQUENCY (kHz)
VBAT = 4.4V
ZSPK = 6Ω + 33µH
BST_BYP_MODE = 0
2.8W
710mW
TOTAL HARMON C D STORT ONTOTAL HARMON C D STORT ON
PLUS NO SE vs. FREQUENCYPLUS NO SE vs. FREQUENCY
toc23
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.01 0.1 1 10 100
THD+N (dB)
FREQUENCY (kHz)
VBAT = 4.4V
ZSPK = 8Ω + 33µH
BST_BYP_MODE = 0
SPK_GA N = 21dB
2.7W
690mW
TOTAL HARMON C D STORT ONTOTAL HARMON C D STORT ON
PLUS NO SE vs. FREQUENCYPLUS NO SE vs. FREQUENCY
toc24
0.0
0.5
1.0
1.5
2.0
2.5
3.0
1 10 100
OUTPUT POWER (W)
LOAD MPEDANCE (Ω)
VBAT = 3.7V
BST_BYP_MODE = 1
THERMAL FOLDBACK ENABLED
1% THD+N
10% THD+N
OUTPUT POWEROUTPUT POWER
vs. LOAD MPEDANCEvs. LOAD MPEDANCE
toc25
0
1
2
3
4
5
6
7
8
9
10
1 10 100
OUTPUT POWER (W)
LOAD MPEDANCE (Ω)
VBAT = 3.7V
BST_BYP_MODE = 0
THERMAL FOLDBACK ENABLED
1% THD+N
10% THD+N
THERMAL FOLDBACK ENGAGED
OUTPUT POWEROUTPUT POWER
vs. LOAD MPEDANCEvs. LOAD MPEDANCE
toc26
0
1
2
3
4
5
6
7
8
9
10
1 10 100
OUTPUT POWER (W)
LOAD MPEDANCE (Ω)
VBAT = 4.4V
BST_BYP_MODE = 0
THERMAL FOLDBACK ENABLED
1% THD+N
10% THD+N
THERMAL FOLDBACK ENGAGED
OUTPUT POWEROUTPUT POWER
vs. LOAD MPEDANCEvs. LOAD MPEDANCE
toc27
MAX98380 Small, Boosted, igital Input Class- Amplifier
www.analog.com Analog evices | 17
Downloaded from Arrow.com.

Typical Operating Characteristics (continued)
(VBAT = 3.7V, VV = 1.8V, VGN = 0V, VPGN = 0V, CVBAT = 1 x 10μF, 1 x 0.1μF, CV = 1μF, CPV = 2 x 10μF, 1 x 0.1μF,
CCPBYP = 2 x 2.2μF, 1 x 0.1μF, CCP1 = 2 x 2.2μF, CCP2 = 2 x 2.2μF, fBCLK = 3.072MHz, fLRCLK = 48kHz, ZSPK = ∞ between OUTP
and OUTN, AC Measurement Bandwidth = 20Hz to 20kHz, TA = TMIN to TMAX, typical values are at TA = +25°C) )
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.0 3.5 4.0 4.5 5.0 5.5
OUTPUT POWER (W)
VBAT SUPPLY LEVEL (V)
ZSPK = 6Ω + 33µH
BST_BYP_MODE = 1
1% THD+N
10% THD+N
OUTPUT POWEROUTPUT POWER
vs. Vvs. VBATBAT SUPPLY LEVELSUPPLY LEVEL
toc28
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.0 3.5 4.0 4.5 5.0 5.5
OUTPUT POWER (W)
VBAT SUPPLY LEVEL (V)
ZSPK = 8Ω + 33µH
BST_BYP_MODE = 1
1% THD+N
10% THD+N
OUTPUT POWEROUTPUT POWER
vs. Vvs. VBATBAT SUPPLY LEVELSUPPLY LEVEL
toc29
0
1
2
3
4
5
6
7
8
9
10
3.0 3.5 4.0 4.5 5.0 5.5
OUTPUT POWER (W)
VBAT SUPPLY LEVEL (V)
ZSPK = 6Ω + 33µH
BST_BYP_MODE = 0
1% THD+N
10% THD+N
OUTPUT POWEROUTPUT POWER
vs. Vvs. VBATBAT SUPPLY LEVELSUPPLY LEVEL
toc30
0
1
2
3
4
5
6
7
8
9
10
3.0 3.5 4.0 4.5 5.0 5.5
OUTPUT POWER (W)
VBAT SUPPLY LEVEL (V)
ZSPK = 8Ω + 33µH
BST_BYP_MODE = 0
1% THD+N
10% THD+N
OUTPUT POWEROUTPUT POWER
vs. Vvs. VBATBAT SUPPLY LEVELSUPPLY LEVEL
toc31
10
15
20
25
30
35
40
2.5 3.5 4.5 5.5
OUTPUT LEVEL (µV)
VBAT LEVEL (V)
ZSPK = 8Ω + 33µH
A-WE GHTED
BST_BYP_MODE = 0
BST_BYP_MODE = 1
OUTPUT NO SE vs. VOUTPUT NO SE vs. VBATBAT LEVELLEVEL
toc32
0
10
20
30
40
50
60
70
80
90
100
0 1 2 3 4 5
SYSTEM EFF C ENCY (%)
OUTPUT POWER (W)
VBAT = 3.7V
ZSPK = 6Ω + 33μH
DEFAULT CAPAC TORS
CP_CLK_SEL = 0x0
EFF C ENCY vs. OUTPUT POWEREFF C ENCY vs. OUTPUT POWER
toc33
0
10
20
30
40
50
60
70
80
90
100
0.0001 0.001 0.01 0.1 1 10
SYSTEM EFF C ENCY (%)
OUTPUT POWER (W)
VBAT = 3.7V
ZSPK = 6Ω + 33μH
DEFAULT CAPAC TORS
CP_CLK_SEL = 0x0
EFF C ENCY vs. OUTPUT POWEREFF C ENCY vs. OUTPUT POWER
toc34
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0.0001 0.001 0.01 0.1 1 10
POWER D SS PAT ON (W)
OUTPUT POWER (W)
VBAT = 3.7V
ZSPK = 6Ω + 33μH
DEFAULT CAPAC TORS
CP_CLK_SEL= 0x0
POWER D SS PAT ONPOWER D SS PAT ON
vs. OUTPUT POWERvs. OUTPUT POWER
toc35
0
10
20
30
40
50
60
70
80
90
100
0 1 2 3 4 5
SYSTEM EFF C ENCY (%)
OUTPUT POWER (W)
VBAT = 3.7V
ZSPK = 8Ω + 33μH
DEFAULT CAPAC TORS
CP_CLK_SEL= 0x0
EFF C ENCY vs. OUTPUT POWEREFF C ENCY vs. OUTPUT POWER
toc36
MAX98380 Small, Boosted, igital Input Class- Amplifier
www.analog.com Analog evices | 18
Downloaded from Arrow.com.

Typical Operating Characteristics (continued)
(VBAT = 3.7V, VV = 1.8V, VGN = 0V, VPGN = 0V, CVBAT = 1 x 10μF, 1 x 0.1μF, CV = 1μF, CPV = 2 x 10μF, 1 x 0.1μF,
CCPBYP = 2 x 2.2μF, 1 x 0.1μF, CCP1 = 2 x 2.2μF, CCP2 = 2 x 2.2μF, fBCLK = 3.072MHz, fLRCLK = 48kHz, ZSPK = ∞ between OUTP
and OUTN, AC Measurement Bandwidth = 20Hz to 20kHz, TA = TMIN to TMAX, typical values are at TA = +25°C) )
0
10
20
30
40
50
60
70
80
90
100
0.0001 0.001 0.01 0.1 1 10
SYSTEM EFF C ENCY (%)
OUTPUT POWER (W)
VBAT = 3.7V
ZSPK = 8Ω + 33μH
DEFAULT CAPAC TORS
CP_CLK_SEL = 0x0
EFF C ENCY vs. OUTPUT POWEREFF C ENCY vs. OUTPUT POWER
toc37
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0.0001 0.001 0.01 0.1 1 10
POWER D SS PAT ON (W)
OUTPUT POWER (W)
VBAT = 3.7V
ZSPK = 8Ω + 33μH
DEFAULT CAPAC TORS
CP_CLK_SEL= 0x0
POWER D SS PAT ONPOWER D SS PAT ON
vs. OUTPUT POWERvs. OUTPUT POWER
toc38
0
10
20
30
40
50
60
70
80
90
100
0 1 2 3 4 5
SYSTEM EFF C ENCY (%)
OUTPUT POWER (W)
VBAT = 4.4V
ZSPK = 6Ω + 33μH
DEFAULT CAPAC TORS
CP_CLK_SEL= 0x0
EFF C ENCY vs. OUTPUT POWEREFF C ENCY vs. OUTPUT POWER
toc39
0
10
20
30
40
50
60
70
80
90
100
0.0001 0.001 0.01 0.1 1 10
SYSTEM EFF C ENCY (%)
OUTPUT POWER (W)
VBAT = 4.4V
ZSPK = 6Ω + 33μH
DEFAULT CAPAC TORS
CP_CLK_SEL= 0x0
EFF C ENCY vs. OUTPUT POWEREFF C ENCY vs. OUTPUT POWER
toc40
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0.0001 0.001 0.01 0.1 1 10
POWER D SS PAT ON (W)
OUTPUT POWER (W)
VBAT = 4.4V
ZSPK = 6Ω + 33μH
DEFAULT CAPAC TORS
CP_CLK_SEL = 0x0
POWER D SS PAT ONPOWER D SS PAT ON
vs. OUTPUT POWERvs. OUTPUT POWER
toc41
0
10
20
30
40
50
60
70
80
90
100
0 2 4 6 8 10
SYSTEM EFF C ENCY (%)
OUTPUT POWER (W)
VBAT = 4.4V
ZSPK = 8Ω + 33μH
DEFAULT CAPAC TORS
CP_CLK_SEL= 0x0
EFF C ENCY vs. OUTPUT POWEREFF C ENCY vs. OUTPUT POWER
toc42
0
10
20
30
40
50
60
70
80
90
100
0.0001 0.001 0.01 0.1 1 10
SYSTEM EFF C ENCY (%)
OUTPUT POWER (W)
VBAT = 4.4V
ZSPK = 8Ω + 33μH
DEFAULT CAPAC TORS
CP_CLK_SEL = 0x0
EFF C ENCY vs. OUTPUT POWEREFF C ENCY vs. OUTPUT POWER
toc43
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0.0001 0.001 0.01 0.1 1 10
POWER D SS PAT ON (W)
OUTPUT POWER (W)
VBAT = 4.4V
ZSPK = 8Ω + 33μH
DEFAULT CAPAC TORS
CP_CLK_SEL = 0
POWER D SS PAT ONPOWER D SS PAT ON
vs. OUTPUT POWERvs. OUTPUT POWER
toc44
0
10
20
30
40
50
60
70
80
90
100
0 1 2 3 4 5
SYSTEM EFF C ENCY (%)
OUTPUT POWER (W)
VBAT = 3.7V
ZSPK = 6Ω + 33μH
DOUBLE FLY NG CAPAC TORS
CP_CLK_SEL = 0x2
EFF C ENCY vs. OUTPUT POWEREFF C ENCY vs. OUTPUT POWER
toc45
MAX98380 Small, Boosted, igital Input Class- Amplifier
www.analog.com Analog evices | 19
Downloaded from Arrow.com.

Typical Operating Characteristics (continued)
(VBAT = 3.7V, VV = 1.8V, VGN = 0V, VPGN = 0V, CVBAT = 1 x 10μF, 1 x 0.1μF, CV = 1μF, CPV = 2 x 10μF, 1 x 0.1μF,
CCPBYP = 2 x 2.2μF, 1 x 0.1μF, CCP1 = 2 x 2.2μF, CCP2 = 2 x 2.2μF, fBCLK = 3.072MHz, fLRCLK = 48kHz, ZSPK = ∞ between OUTP
and OUTN, AC Measurement Bandwidth = 20Hz to 20kHz, TA = TMIN to TMAX, typical values are at TA = +25°C) )
0
10
20
30
40
50
60
70
80
90
100
0.0001 0.001 0.01 0.1 1 10
SYSTEM EFF C ENCY (%)
OUTPUT POWER (W)
VBAT = 3.7V
ZSPK = 6Ω + 33μH
DOUBLE FLY NG CAPAC TORS
CP_CLK_SEL = 0x2
EFF C ENCY vs. OUTPUT POWEREFF C ENCY vs. OUTPUT POWER
toc46
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0.0001 0.001 0.01 0.1 1 10
POWER D SS PAT ON (W)
OUTPUT POWER (W)
VBAT = 3.7V
ZSPK = 6Ω + 33μH
DOUBLE FLY NG CAPAC TORS
CP_CLK_SEL = 0x2
POWER D SS PAT ONPOWER D SS PAT ON
vs. OUTPUT POWERvs. OUTPUT POWER
toc47
0
10
20
30
40
50
60
70
80
90
100
0 1 2 3 4 5
SYSTEM EFF C ENCY (%)
OUTPUT POWER (W)
VBAT = 3.7V
ZSPK = 8Ω + 33μH
DOUBLE FLY NG CAPAC TORS
CP_CLK_SEL = 0x2
EFF C ENCY vs. OUTPUT POWEREFF C ENCY vs. OUTPUT POWER
toc48
0
10
20
30
40
50
60
70
80
90
100
0.0001 0.001 0.01 0.1 1 10
SYSTEM EFF C ENCY (%)
OUTPUT POWER (W)
VBAT = 3.7V
ZSPK = 8Ω + 33μH
DOUBLE FLY NG CAPAC TORS
CP_CLK_SEL = 0x2
EFF C ENCY vs. OUTPUT POWEREFF C ENCY vs. OUTPUT POWER
toc49
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0.0001 0.001 0.01 0.1 1 10
POWER D SS PAT ON (W)
OUTPUT POWER (W)
VBAT = 3.7V
ZSPK = 8Ω + 33μH
DOUBLE FLY NG CAPAC TORS
CP_CLK_SEL = 0x2
POWER D SS PAT ONPOWER D SS PAT ON
vs. OUTPUT POWERvs. OUTPUT POWER
toc50
0
10
20
30
40
50
60
70
80
90
100
0 2 4 6 8 10
SYSTEM EFF C ENCY (%)
OUTPUT POWER (W)
VBAT = 4.4V
ZSPK = 6Ω + 33μH
DOUBLE FLY NG CAPAC TORS
CP_CLK_SEL = 0x2
EFF C ENCY vs. OUTPUT POWEREFF C ENCY vs. OUTPUT POWER
toc51
0
10
20
30
40
50
60
70
80
90
100
0.0001 0.001 0.01 0.1 1 10
SYSTEM EFF C ENCY (%)
OUTPUT POWER (W)
VBAT = 4.4V
ZSPK = 6Ω + 33μH
DOUBLE FLY NG CAPAC TORS
CP_CLK_SEL = 0x2
EFF C ENCY vs. OUTPUT POWEREFF C ENCY vs. OUTPUT POWER
toc52
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0.0001 0.001 0.01 0.1 1 10
POWER D SS PAT ON (W)
OUTPUT POWER (W)
V
BAT
= 4.4V
ZSPK = 6Ω + 33μH
DOUBLE FLY NG CAPAC TORS
CP_CLK_SEL = 0x2
POWER D SS PAT ONPOWER D SS PAT ON
vs. OUTPUT POWERvs. OUTPUT POWER
toc53
0
10
20
30
40
50
60
70
80
90
100
0 1 2 3 4 5
SYSTEM EFF C ENCY (%)
OUTPUT POWER (W)
VBAT = 4.4V
ZSPK = 8Ω + 33μH
DOUBLE FLY NG CAPAC TORS
CP_CLK_SEL = 0x2
EFF C ENCY vs. OUTPUT POWEREFF C ENCY vs. OUTPUT POWER
toc54
MAX98380 Small, Boosted, igital Input Class- Amplifier
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