Texas Instruments TPA3003D2EVM User manual

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March 2003 HPL
User’s Guide
SLOU159

IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,
enhancements, improvements, and other changes to its products and services at any time and to discontinue
any product or service without notice. Customers should obtain the latest relevant information before placing
orders and should verify that such information is current and complete. All products are sold subject to TI’s terms
and conditions of sale supplied at the time of order acknowledgment.
TI warrants performance of its hardware products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI
deems necessary to support this warranty. Except where mandated by government requirements, testing of all
parameters of each product is not necessarily performed.
TI assumes no liability for applications assistance or customer product design. Customers are responsible for
their products and applications using TI components. To minimize the risks associated with customer products
and applications, customers should provide adequate design and operating safeguards.
TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right,
copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process
in which TI products or services are used. Information published by TI regarding third–party products or services
does not constitute a license from TI to use such products or services or a warranty or endorsement thereof.
Use of such information may require a license from a third party under the patents or other intellectual property
of the third party, or a license from TI under the patents or other intellectual property of TI.
Reproduction of information in TI data books or data sheets is permissible only if reproduction is without
alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction
of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for
such altered documentation.
Resale of TI products or services with statements different from or beyond the parameters stated by TI for that
product or service voids all express and any implied warranties for the associated TI product or service and
is an unfair and deceptive business practice. TI is not responsible or liable for any such statements.
Mailing Address:
Texas Instruments
Post Office Box 655303
Dallas, Texas 75265
Copyright 2003, Texas Instruments Incorporated

EVM IMPORTANT NOTICE
Texas Instruments (TI) provides the enclosed product(s) under the following conditions:
This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION
PURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods being provided
may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective
considerations, including product safety measures typically found in the end product incorporating the goods.
As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic
compatibility and therefore may not meet the technical requirements of the directive.
Should this evaluation kit not meet the specifications indicated in the EVM User’s Guide, the kit may be returned
within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE
WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED,
IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY
PARTICULAR PURPOSE.
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user
indemnifies TI from all claims arising from the handling or use of the goods. Please be aware that the products
received may not be regulatory compliant or agency certified (FCC, UL, CE, etc.). Due to the open construction
of the product, it is the user’s responsibility to take any and all appropriate precautions with regard to electrostatic
discharge.
EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE
TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
TI currently deals with a variety of customers for products, and therefore our arrangement with the user is not
exclusive.
TI assumes no liability for applications assistance, customer product design, software performance, or
infringement of patents or services described herein.
Please read the EVM User’s Guide and, specifically, the EVM Warnings and Restrictions notice in the EVM
User’s Guide prior to handling the product. This notice contains important safety information about temperatures
and voltages. For further safety concerns, please contact the TI application engineer.
Persons handling the product must have electronics training and observe good laboratory practice standards.
No license is granted under any patent right or other intellectual property right of TI covering or relating to any
machine, process, or combination in which such TI products or services might be or are used.
Mailing Address:
Texas Instruments
Post Office Box 655303
Dallas, Texas 75265
Copyright 2003, Texas Instruments Incorporated

EVM WARNINGS AND RESTRICTIONS
It is important to operate this EVM within the supply voltage range specified in this user’s
guide. The supply voltage range should be 8.5 V to 14 V, and supply current (Icc)should be
no greater than 1.6 A maximum.
Operating outside the specified supply voltage range may cause unexpected operation and/or
irreversible damage to the EVM. If there are questions concerning the supply voltage and
current range, please contact a TI field representative prior to applying power to the device.
Applying loads outside of the specified output range may result in unintended operation and/or
possible permanent damage to the EVM. Please consult the EVM User’s Guide prior to
connecting any load to the EVM output. If there is uncertainty as to the load specification,
please contact a TI field representative.
During normal operation, some circuit components may have case temperatures greater than
60°C. The EVM is designed to operate properly with certain components above 60°C as long
as the input and output ranges are maintained. These components include but are not limited
to linear regulators, switching transistors, pass transistors, and current sense resistors. These
types of devices can be identified using the EVM schematic located in the EVM User’s Guide.
When placing measurement probes near these devices during operation, please be aware
that these devices may be very warm to the touch.
Mailing Address:
Texas Instruments
Post Office Box 655303
Dallas, Texas 75265
Copyright 2003, Texas Instruments Incorporated

Information About Cautions and Warnings
v
Preface
Read This First
Information About Cautions and Warnings
This book may contain cautions and warnings.
This is an example of a caution statement.
A caution statement describes a situation that could potentially
damage your software or equipment.
This is an example of a warning statement.
A warning statement describes a situation that could potentially
cause harm to you.
The information in a caution or a warning is provided for your protection.
Please read each caution and warning carefully.
FCC Warning
This equipment is intended for use in a laboratory test environment only. It gen-
erates, uses, and can radiate radio frequency energy and has not been tested
for compliance with the limits of computing devices pursuant to subpart J of
part 15 of FCC rules, which are designed to provide reasonable protection
against radio frequency interference. Operation of this equipment in other en-
vironments may cause interference with radio communications, in which case
the user at his own expense will be required to take whatever measures may
be required to correct this interference.

Related Documentation From Texas Instruments
vi
Electrostatic Sensitive Devices
This EVM contains components that can potentially be damaged by
electrostatic discharge. Always transport and store the EVM in its
supplied ESD bag when not in use. Handle using an antistatic
wristband. Operate on an antistatic work surface. For more
information on proper handling, refer to SSYA008.
Related Documentation From Texas Instruments
-TPA3003D2 data sheet (SLOS406)

Contents
vii
Contents
1 Introduction 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Description 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 TPA3003D2EVM Specifications 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Operation 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Quick Start List for Stand-Alone Operation 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.1 Power Supply 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.2 Inputs and Outputs 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.3 Evaluation Module Preparations 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.4 Control Inputs 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.5 Power Up 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Reference 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 TPA3003D2EVM Schematic 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 EVM PCB Layers 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 TPA3003D2EVM Parts List 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 DC Volume Control for Class-D Outputs (OUT+ and OUT–) 3-5. . . . . . . . . . . . . . . . . . . . . .

Contents
viii
Figures
1–1 The TI TPA3003D2 Audio Power Amplifier EVM (Top View) 1-2. . . . . . . . . . . . . . . . . . . . . . . . .
1–2 The TI TPA3003D2 Audio Power Amplifier EVM (Bottom View) 1-2. . . . . . . . . . . . . . . . . . . . .
3–1 TPA3003D2EVM Schematic 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–2 TPA3003D2EVM (Top Layer) 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–3 TPA3003D2EVM (Bottom Layer) 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tables
3–1 TPA3003D2EVM Parts List 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–2 DC Volume Control for Class-D Outputs 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1
Introduction
Introduction
This chapter provides a brief description of the TPA3003D2EVM.
Topic Page
1.1 Description 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 TPA3003D2EVM Specifications 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 1

Description
1-2
1.1 Description
The TPA3003D2 audio power amplifier evaluation module is a
3-watt-per-channel class-D stereo audio power amplifier complete with a
small number of external components mounted on a circuit board that
measures approximately 2-1/4 inches by 1-3/4 inches (Figure 1–1 and
Figure 1–2).
Figure 1–1.The TI TPA3003D2 Audio Power Amplifier EVM (Top View)
Figure 1–2.The TI TPA3003D2 Audio Power Amplifier EVM (Bottom View)

TPA3003D2EVM Specifications
1-3
Introduction
1.2 TPA3003D2EVM Specifications
Supply voltage range, VCC 8.5 V to 14 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, VI(VOL, MUTE, FADE) 0 V to 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VI(SD) 0 V to VCC + 0.3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VI(RINN, RINP, LINN, LINP) 0 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply current, ICC 1.6 A Max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous output power per channel, PO: 8 Ω, VCC = 12 V, THD+N = 10% 3 W. . . . . . . . . . . . . . . . .
Minimum load impedance, RL8 Ω. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-4

2-1
Operation
Operation
This chapter describes how to operate the TPA3003D2EVM.
Topic Page
2.1 Quick Start List for Stand-Alone Operation 2-2. . . . . . . . . . . . . . . . . . . . . .
Chapter 2

Quick Start List for Stand-Alone Operation
2-2
2.1 Quick Start List for Stand-Alone Operation
Follow these steps to use the TPA3003D2EVM stand-alone or when
connecting it into existing circuits or equipment. Connections to the EVM
module header pins can be made via individual sockets, wire-wrapping, or
soldering to the pins, either on the top or the bottom of the module circuit board.
2.1.1 Power Supply
1) Ensure that all external power sources are set to OFF.
2) Connect an external regulated power supply, set between 8.5 V and 14 V,
to the module VCC and GND pins, taking care to observe marked polarity.
2.1.2 Inputs and Outputs
1) Ensure that the audio signal source level adjustments are set to minimum.
2) Connect the right and left positive audio source to the module RIN+ and
LIN+ pins, respectively. Connect the right and left negative audio source
to the module RIN–and LIN–pins, respectively.
3) If using single ended inputs, ground the LIN+ and RIN+ pins and connect
the signal source to RIN–and LIN–.
Note:
If RIN+ and LIN+ on the EVM are connected to ground, the RINP and LINP
on TPA3003D2 IC are ac grounded through C2 and C3. For the best noise
performance, directly connect the input side (left side) of C2 and C3 to the
AGND side of C5 with a short trace or solder bridge.
2.1.3 Evaluation Module Preparations
Adjust the signal source level as needed.
2.1.4 Control Inputs
Note:
Refer to the TPA3003D2 data sheet for logic threshold voltage ratings.
1) SHUTDOWN: This pin is active low. A low on this pin shuts down the
amplifier; a high on this pin places the amplifier in the active state. Leaving
this pin floating also allows normal amplifier operation. Holding down
switch S1 places the amplifier in the shutdown state. Releasing S1 returns
the amplifier to the active state. The absolute maximum voltage on this
terminal is VCC + 0.3 V.
2) MUTE: This pin controls the stereo class-D outputs of the amplifier
(ROUT+, ROUT–, LOUT+, and LOUT–). This pin is active high. A high on
this pin causes the outputs (OUT+ and OUT–) to instantaneously ramp
down in volume, which mutes the device. A low on this pin causes the
outputs (OUT+ and OUT–) to instantaneously ramp up to volume. The
absolute maximum voltage on this pin is 5.5 V.

Quick Start List for Stand-Alone Operation
2-3
Operation
Note:
Do not leave the MUTE pin floating. The TPA3003D2EVM connects the
MUTE pin to ground. If the MUTE function is to be utilized on the EVM, un-
solder the pin and lift it off the module circuit board. Solder a wire to the pin
and apply the necessary voltage for the desired function.
3) FADE: This pin controls the stereo class–D outputs of the amplifier
(ROUT+, ROUT –, LOUT+, and LOUT –) during the four states of the
device (power on, power off, coming out of shutdown, and going into
shutdown). This pin is active low. A low on this pin causes the outputs
(OUT+, and OUT –) to slowly ramp up to volume, when the device is
powered on or when the device comes out of the shutdown state. A low also
causes the outputs to slowly ramp down in volume when the device goes
into shutdown. A high on this pin causes the outputs (OUT+, and OUT –)
to instantaneously ramp up to volume when the device is powered on or
when the device comes out of the shutdown state. A high also causes the
outputs to instantaneously ramp down in volume when the device goes
into shutdown. The absolute maximum voltage on this terminal is 5.5 V.
Note:
Do not leave the FADE pin floating. The TPA3003D2EVM connects the-
FADE pin to ground. If the fade function is to be disabled, unsolder the pin
and lift it off the module circuit board. Solder a wire to the pin and apply the
necessary voltage for the desired function.
2.1.5 Power Up
1) Verify correct voltage and input polarity and set the external power supply
to ON. The EVM begins operation.
2) Adjust the signal source level as needed.
Adjusting the Speaker Volume
3) Adjust the speaker (connected across OUT+ and OUT–) volume as
needed by turning the P1 potentiometer in the clockwise direction to
increase the volume. Conversely, turn P1 in the counterclockwise
direction to decrease the volume. Refer to Table 3–2 in the Reference
section for volume control settings.
Test Pins for Speaker Volume
-T1 –VOL –Speaker volume

2-4

3-1
Reference
Reference
This chapter provides reference information for the TPA3003D2EVM.
Topic Page
3.1 TPA3003D2EVM Schematic 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 EVM PCB Layers 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 TPA3003D2EVM Parts List 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 DC Volume Control 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 3

TPA3003D2EVM Schematic
3-2
3.1 TPA3003D2EVM Schematic
Figure 3–1.TPA3003D2EVM Schematic
C11
C17
10nF
C20 C12
10nF
C21
220pF
C6
R1
1.0uF
C8
C14
C7
C2
C1
C4
C3
LIN+
LIN–
RIN–
RIN+
SHUTDOWN
BSLP
PVCCL
LOUTP
TPA3003D2
VCLAMPR
SD
V2P5
RINP
LINN
LINP
AVDDREF
VREF
AGND
AGND
VOLUME
REFGND
MUTE
NC
NC
NC
FADE
AVDD
AGND
COSC
ROSC
AVCC
VCLAMPL
PVCCR
RINN
C16
C5
R2
S1
Vcc
P1 T1
LOUT–
LOUT+
C9
C15
10nF
C18 C10
10nF
C19
ROUT–
VCC
L3
(Bead)
C24
1nF
L4
(Bead)
C25
1nF
GND
C13
AGND
AGND
AGND
PGND
PGND
PGND
PGND
ROUT+
L1
(Bead)
C22
1nF
L2
(Bead)
C23
1nF
0.1µF10µF
1.0µF
0.1µF
0.1µF
10µF
1.0µF
1.0µF
1.0µF
1.0µF
1.0µF
0.1µF0.1µF
10µF
50kΩ
120kΩ
120kΩ
0.1µF
PVCCL PVCCL PVCCL
PVCCR PVCCR PVCCR
LOUTP LOUTN LOUTN PGNDL PGNDL BSLN
BSRP
ROUTN ROUTN PGNDR PGNDR
ROUTP ROUTP
BSRN
Vcc
Vcc
VccVcc
AGND

EVM PCB Layers
3-3
Reference
3.2 EVM PCB Layers
Figure 3–2.TPA3003D2EVM (Top Layer)
Figure 3–3.TPA3003D2EVM (Bottom Layer)

TPA3003D2EVM Parts List
3-4
3.3 TPA3003D2EVM Parts List
Table 3–1.TPA3003D2EVM Parts List
Reference Description Size Qty Mfg. Part # Vendor #
C1–C5 Capacitor, ceramic, 1.0 µF,
+80%/–20%, Y5V, 10 V 0603 5 Panasonic ECJ–1VF1A105Z Digi–Key PCC1787CT–ND
C6 Capacitor, ceramic, 220 pF,
±5%, 50 V 0603 1 Panasonic ECJ–1VC1H221J Digi–Key PCC221ACVCT–ND
C7, C8 Capacitor, ceramic, 1.0 µF,
+80%/–20%, Y5V, 50 V 0805 2 Taiyo Yuden UMK212F105ZG–T TeCal UMK212F10526–T
C9–C14 Capacitor, ceramic, 0.1 µF,
+80%/–20%, Y5V, 50 V 0603 5 Panasonic ECJ–1VF1H104Z Digi–Key PCC2153CT–ND
C15, C16,
C17 Capacitor, ceramic, 10 µF, +80%/–20%, Y5V, 25 V 1210 3 Panasonic ECJ–4YF1E106Z Digi–Key PCC2171CT–ND
C18–C21 Capacitor, ceramic, 0.01 µF,
+80%/–20%, Y5V, 50 V 0603 4 Panasonic ECJ–1VF1H103Z Digi–Key PCC1801CT–ND
C22–C25 Capacitor, ceramic, 1000 pF,
±10%, X7R, 50 V 0603 4 Panasonic ECJ–1VB1H102K Digi–Key PCC1772TR–ND
L1–L4 Ferrite bead, 0.05 ΩDCR, 70
Ωat 100 MHz, 3A 1206 4 Fair–rite 2512067007Y3 Mouser 623–2512067007Y3
R1–R2 Resistor, chip, 120 kΩ, 1/16
W, 5% 0603 2 Panasonic ERJ–3GEYJ124V Digi–Key P120KGTR–ND
D1–D4 Do not install
P1 Potentiometer, 50 kΩ, thru
hole 1 Bourns 3362P–1–503 Digi–Key 3362P–503–ND
S1 Switch, momentary, SMD, low
profile 1 Panasonic EVQ–PPBA25 Digi–Key P8086SCT–ND
PnP pins Headers, 0.1 in centers, 1/2 in
long 11 Samtec SW–19–8–G–S
T1 Test points, 0.040”mounting
hole 1 Farnell 240–345
U1 TPA3003D2PFB 48-pin
QFP 1 TI TPA3003D2PFB