Texas Instruments TPA2001D2 User manual


 
  
 
November 2000 Mixed-Signal Products
User’s Guide
SLOU093

IMPORTANT NOTICE
TexasInstruments andits subsidiaries(TI) reservethe rightto makechanges totheir productsor todiscontinue
any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those
pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TIdeemsnecessarytosupport thiswarranty. Specifictestingofallparameters ofeachdevice isnotnecessarily
performed, except those mandated by government requirements.
Customers are responsible for their applications using TI components.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TIassumes noliabilityforapplicationsassistance orcustomer productdesign. TIdoes notwarrantorrepresent
thatanylicense,eitherexpressorimplied,isgrantedunderanypatentright,copyright,maskworkright,orother
intellectual property right of TI covering or relating to any combination, machine, or process in which such
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright 2000, Texas Instruments Incorporated

Running Title—Attribute Reference
iii
Chapter Title—Attribute Reference
Preface
Read This First
Related Documentation From Texas Instruments
 TI Plug-N-Play Audio Amplifier Evaluation Platform (literature
number SLOU011) provides detailed information on the evaluation
platform and its use with TI audio evaluation modules.
 TPA2001D2 1-W STEREO CLASS-D AUDIO POWER
AMPLIFIER
(literature number SLOS292) This is the data sheet
for the TPA2001D2 audio amplifier integrated circuit.
FCC Warning
This equipment is intended for use in a laboratory test environment only. It
generates, uses, and can radiate radio frequency energy and has not been
testedforcompliancewiththelimitsofcomputingdevicespursuanttosubpart
Jofpart 15ofFCCrules,which aredesignedtoprovidereasonableprotection
against radio frequency interference. Operation of this equipment in other
environments 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.

iv

Running Title—Attribute Reference
v
Chapter Title—Attribute Reference
Contents
1 Introduction 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Feature Highlights 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Description 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 TPA2001D2 EVM Specifications 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Operation 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Precautions 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Quick Start List for Platform 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3 Quick Start List for Stand-Alone 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4 Reference 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4.1 TPA2001D2 EVM Connected for Stereo Output 2-6. . . . . . . . . . . . . . . . . . . . . . . . .
2.4.2 TPA2001D2 Audio Power Amplifier Evaluation Module Parts List 2-7. . . . . . . . . .
2.4.3 TPA2001D2 Filterless Class-D EVM Schematic 2-8. . . . . . . . . . . . . . . . . . . . . . . . .
2.4.4 TPA2001D2 Filterless Class-D EVM PCB Layers 2-9. . . . . . . . . . . . . . . . . . . . . . . .

Running Title—Attribute Reference
vi
Figures
1–1 The TI TPA2001D2 Audio Amplifier EVM Without Output Filter—Top View 1-3. . . . . . . . . . . .
1–2 The TI TPA2001D2 Audio Amplifier EVM Without Output Filter—Bottom View 1-3. . . . . . . . .
2–1 Quick Start Platform Map 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–2 Module Preparation 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–3 Quick Start Module Map 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–4 TPA2001D2 EVM Connected for Stereo Output 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–5 TPA2001D2 Filterless Class-D EVM Schematic Diagram 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . .
2–6 TPA2001D2 Filterless Class-D EVM Top Assembly 2-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–7 TPA2001D2 Filterless Class-D EVM Bottom Assembly 2-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–8 TPA2001D2 Filterless Class-D EVM Top Layer 2-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–9 TPA2001D2 Filterless Class-D EVM Bottom Layer 2-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tables
2–1 Typical TI Plug-N-Play Platform Jumper and Switch Settings for the TPA2001D2 2-1. . . . . .
2–2 Typical TPA2001D2 EVM Jumper Settings 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–3 Platform Jumper and Switch Settings for the TPA2001D2 2-3. . . . . . . . . . . . . . . . . . . . . . . . . .
2–4 Typical TPA2001D2 EVM Jumper Settings 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–5 TPA2001D2 EVM Gain Settings 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–6 TPA2001D2 EVM Parts List 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1
Introduction
This chapter provides an overview of the Texas Instruments (TI) TPA2001D2
filterless class-D audio amplifier evaluation module (SLOP315). It includes a
listofEVM features,abriefdescriptionof themoduleillustratedwithapictorial
diagram, and a list of EVM specifications.
Topic Page
1.1 Feature Highlights 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Description 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 TPA2001D2 EVM Specifications 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 1

Feature Highlights
1-2
Introduction
1.1 Feature Highlights
The TI TPA2001D2 audio amplifier evaluation module and the TI plug-n-play
audio amplifier evaluation platform include the following features:
TPA2001D2 Stereo 1-W Filterless Class-D Audio Power Amplifier
Evaluation Module
Class-D without output filter
Internal depop circuitry to minimize transients in outputs
High efficiency
Low distortion
Low supply current (8 mA)
1 W per channel output power into 8 Ωat 5 V
Low current consumption in shutdown mode
Four selectable gain settings: 8, 12, 17.5, and 23.5 dB
Differential stereo inputs and outputs
24-pin TSSOP PWP package
Quick and Easy Configuration With the TI Plug-N-Play Audio Amplifier
Evaluation Platform
Evaluation module is designed to simply plug into the platform,
automatically making all signal, control, and power connections
Platform provides flexible power options
Jumpers on the platform select power and module control options
Switches on the platform route signals
Platformprovides quick andeasyaudioinput and outputconnections
Platform Power Options
External 5-V – 15-V dc VCC supply inputs
External regulated VDD supply input
Socket for onboard 5 V/3.3 V VDD voltage regulator EVM
Onboard overvoltage and reverse polarity power protection
Platform Audio Input and Output Connections
Left and right RCA phono jack inputs
Miniature stereo phone jack input
Left and right RCA phono jack outputs
Left and right compression speaker terminal outputs
Miniature stereo headphone jack output

Description
1-3
Introduction
1.2 Description
The TPA2001D2 filterless class-D stereo audio power amplifier evaluation
module is a complete, 1-W per channel class-D stereo audio power amplifier
that can operate without an output filter. It consists of the TI TPA2001D2
class-D stereo 1-W audio power amplifier IC along with a small number of
other parts mounted on a circuit board that measures approximately 2-1/4
inches by 1-1/2 inches (Figure 1–1 and Figure 1–2).
Figure 1–1.The TI TPA2001D2 Audio Amplifier EVM Without Output Filter—Top View
GND
ROUT+
ROUT–
SHUTDOWN
GND
LOUT–
LOUT+
C7
C12
VDD GND
LIN–
GND
LIN+
VDD GND
RIN+
GND
RIN–
TPA2001D2 EVM
SLOP315 U1
R1
2000
+
+
S1
SHUTDOWN
GAIN0
GAIN1
C11
C9
C10
C5
C4
C3
C2
C1
C6
R2
R3
C8
C15
C16
Figure 1–2.The TI TPA2001D2 Audio Amplifier EVM Without Output Filter—Bottom View
C17
R4
C18
C19
C20
C21
Single in-line header pins extend from the underside of the module circuit
board to allow the EVM to be plugged into the TI plug-n-play audio amplifier
evaluationplatform,ortobewired directlyintoexistingcircuitsandequipment
when used stand-alone.

TPA2001D2 EVM Specifications
1-4
Introduction
The platform has room for a single TPA2001D2 evaluation module and is a
convenient vehicle for demonstrating TI’s audio power amplifier and related
evaluation modules. The EVMs simply plug into the platform, which
automatically provides power to the modules, interconnects them correctly,
andconnectsthemtoaversatilearrayofstandardaudioinputandoutputjacks
and connectors. Easy-to-use configuration controls allow the platform and
EVMs to quickly model many possible end-equipment configurations.
There is nothing to build, nothing to solder, and nothing but the speakers
included with the platform to
hook up .
1.3 TPA2001D2 EVM Specifications
Supply voltage range, VDD 4.5 V to 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply current, IDD 1 A max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous output power per channel, PO: 8 Ω, VDD = 5 V 1 W. . . . . . . . . . . . . . . . . . . . . . . . . . .
Minimum load impedance, RL8 Ω. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-1
Operation
Operation
The steps in this chapter can be followed to quickly prepare the TPA2001D2
filterless class-D audio amplifier EVM for use. Using the TPA2001D2 with the
TI plug-n-play audio amplifier evaluation platform is a quick and easy way to
connectpower, signaland control inputs,and signal outputs tothe EVM using
standard connectors. However, the audio amplifier evaluation module can be
used stand-alone by making connections directly to the module pins, and can
be wired directly into existing circuits or equipment.
Theplatformswitchand jumper settings shown inTable2–1aretypicalforthe
TPA2001D2 EVM and will cause the TPA2001D2 to shut down when a plug
is inserted into platform headphone jack J10.
Table 2–1. Typical TI Plug-N-Play Platform Jumper and Switch Settings for the
TPA2001D2
EVM JP4 JP5 JP6 JP7 JP8 S2 S3
P-N-P Platform X ON Mute X Lo Note 2 U5
Notes: 1) ON = Jumper installed, OFF = Jumper NOT Installed, X = Don’t care
2) SetS2to ON when signalconditioningboardis installed in U1;setS2
to OFF when no signal conditioning board is installed.
Table 2–2. Typical TPA2001D2 EVM Jumper Settings
EVM GAIN0 GAIN1
TPA2001D2 OFF OFF
Note: ON = Jumper installed, OFF = Jumper NOT Installed, X = Don’t care
Topic Page
2.1 Precautions 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Quick Start List for Platform 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3 Quick Start List for Stand-Alone 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4 Reference 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 2

Precautions
2-2
Operation
2.1 Precautions
Power Supply Input Polarity and Maximum Voltage
Always ensure that the polarity and voltage of the external power
connected to VCC power input connector J1, J2, and/or VDD power
input connector J6 are correct. Overvoltage or reverse-polarity
power applied to these terminals can open onboard soldered-in
fuses and cause other damage to the platform, installed evaluation
modules, and/or the power source.
Inserting or Removing EVM Boards
Do not insert or remove EVM boards with power applied—damage
to the EVM board, the platform, or both may result.
Figure 2–1.Quick Start Platform Map
Signal Conditioning
****CAUTION****
Do not insert or remove
EVM boards with power
applied
ICC
JP4
F1
VR1
R1
JP3
JP2 JP1 AC/DC
(J2)
VCC(J1)
D1 D2 D3
D4 J2
J3 J4 J5
AC/DC
In
VCC
In
+
J1
DC
SOURCE
LED1 VCC
LED2 VDD
R2
JP5 IDD
B1
U6
POWER
SUPPLY
U3 U4
U5
U1
U2
Audio
Power
Amps
OnOff ConditioningS2
J7 J8 Right
Out Left
Out
+– +–
JP6
Mode
Mute
Spk(U2-U4)
JP8
J9 Left
Out
JP7
S3 HP Source
U2-U4
U5
Polarity
Lo
Hi
HP(U5)
C3 C2
++
R3
R5
J10
Stereo
HP Out
TP1
GND
Plug-N-PlayAudio Amplifier
Evaluation Platform
SLOP097 Rev. C.1
Stereo
In
Right
In Left
In
J6 In/Out VDD
F2
VR2 +
DC
Power
In/Out
Speaker
Output
Headphone
Output
Audio
Input
Power
Input
Batt
C1+
Right
Out
On Off Pwr
S1
TEXAS INSTRUMENTS 1997
R4
7a
1
23 4
5
6
7b
7b
7b 7b
910
12

Quick Start List for Platform
2-3
Operation
2.2 Quick Start List for Platform
Follow these steps when using the TPA2001D2 EVM with the TI plug-n-play
audio amplifier evaluation platform (see the platform user’s guide, literature
number SLOU011, for additional details). Numbered callouts for selected
steps are shown in Figure 2–1 and Figure 2–2.
Platform preparations
1) Ensurethatallexternalpowersourcesaresetto OFF andthattheplatform
power switch S1 is set to OFF.
2) InstallaTPA2001D2moduleinplatformsocketU2,takingcaretoalignthe
module pins correctly.
3) Use switch S2 to select or bypass the signal conditioning EVM (U1).
4) Set control signal Polarity jumper JP8 to
Lo.
5) Set jumper JP6 to select the Mute control input (causes the TPA2001D2
to shut down if a plug is inserted into platform headphone jack J10).
6) If a headphone amplifier will be installed in U5, set headphone source
switch S3 to U5 .
Table 2–3. Platform Jumper and Switch Settings for the TPA2001D2
EVM JP4 JP5 JP6 JP7 JP8 S2 S3
P-N-P Platform X ON Mute X Lo Note 2 U5
Notes: 1) ON = Jumper installed, OFF = Jumper NOT Installed, X = Don’t care
2) SetS2 to
ON whensignal conditioning board is installed inU1; set S2
to
OFF when no signal conditioning board is installed.
Power supply
7) Selectandconnectthepowersupply(ensurepowersupplyissetto OFF ):
a) Connectanexternalregulatedpowersupplysetto5VtoplatformVDD
power input connector J6 taking care to observe marked polarity,
or
b) InstallavoltageregulatorEVM(SLVP097orequiv.)inplatformsocket
U6.Connecta7-V–12-VpowersourcetoaplatformVCCpowerinput
J1 or J2 and jumper the appropriate power input (see platform user’s
guide).IfusingJ1,J2,orB1,setS1to ON tosupplypowertotheEVM.
Inputs and outputs
8) Ensure that the audio signal source level is set to minimum.
9) Connect the audio source to left and right RCA phono jacks J3 and J5 or
stereo miniature phone jack J4.
10) Connectspeakerstoleftandright RCA jacksJ7 andJ9 ortostrippedwire
speaker connectors J8.

Quick Start List for Platform
2-4
Operation
Evaluation Module Preparations
11) Use jumpers GAIN0 and GAIN1 to set the gain (Figure 2–2 and
Table 2–4).
Figure 2–2.Module Preparation
11
GND
ROUT+
ROUT–
SHUTDOWN
GND
LOUT–
LOUT+
C7
C12
VDD GND
LIN–
GND
LIN+
VDD GND
RIN+
GND
RIN–
TPA2001D2 EVM
SLOP315 U1
R1
2000
+
+
S1
SHUTDOWN
GAIN0
GAIN1
C11
C9
C10
C5
C4
C3
C2
C1
C6
R2
R3
C8
C15
C16
Table 2–4. Typical TPA2001D2 EVM Jumper Settings
GAIN1 GAIN0 GAIN (dB)
OFF OFF 8
OFF ON 12
ON OFF 17.5
ON ON 23.5
Note: ON = Jumper installed, OFF = Open, X = Don’t care
Power Up
12) Verify correct voltage and input polarity and setthe external powersupply
to
ON. IfVCC and anonboardregulatorEVMareused toprovideVDD,set
platform power switch S1 to ON.
PlatformLED2shouldlightindicatingthepresenceofVDD,andtheevaluation
modules installed on the platform should begin operation.
13) Adjust the signal source level as needed.

Quick Start List for Stand-Alone
2-5
Operation
2.3 Quick Start List for Stand-Alone
Follow these steps to use the TPA2001D2 EVM stand-alone or when
connecting it into existing circuits or equipment. Connections to the
TPA2001D2 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. Numbered callouts for selected steps are shown in
Figure 2–3.
Figure 2–3.Quick Start Module Map
6
GND
ROUT+
ROUT–
SHUTDOWN
GND
LOUT–
LOUT+
C7
C12
VDD GND
LIN–
GND
LIN+
VDD GND
RIN+
GND
RIN–
TPA2001D2 EVM
SLOP315 U1
R1
2000
+
+
S1
SHUTDOWN
GAIN0
GAIN1
C11
C9
C10
C5
C4
C3
C2
C1
C6
R2
R3
C8
C15
C16
7
5
4
4
2
5
Power supply
1) Ensure that all external power sources are set to OFF.
2) Connectanexternalregulatedpower supplysetto5Vtothemodule VDD
and GND pins taking care to observe marked polarity.
Inputs and outputs
3) Ensure that audio signal source level adjustments are set to minimum.
4) Connect the right (left) positive lead of the audio source to the module
RIN+ (LIN+)pins and the negative lead to the RIN– (LIN–) pins.
5) Connect the right (left) positive lead of the speaker to the module ROUT+
(LOUT+)pins and the negative lead to the ROUT– (LOUT–) pins.

Reference
2-6
Operation
Evaluation module preparations
6) Use jumpers GAIN0 and GAIN1 to set the gain as shown in Table 2–5.
Table 2–5. TPA2001D2 EVM Gain Settings
GAIN1 GAIN0 GAIN (dB)
OFF OFF 8
OFF ON 12
ON OFF 17.5
ON ON 23.5
Note: ON = Jumper installed, OFF = Open, X = Don’t care
Control inputs
7) SHUTDOWN: A low shuts down the amplifier IC on the module; a high or
float allows normal operation.
Power up
8) Connect external power supply set to 5 V across the EVM VDD and GND
pins.
9) Verify correct voltage and input polarity and setthe external powersupply
to ON.
The EVM should begin operation.
10) Adjust the signal source level as needed.
2.4 Reference
2.4.1 TPA2001D2 EVM Connected for Stereo Output
Figure 2–4.TPA2001D2 EVM Connected for Stereo Output
GND
ROUT+
ROUT–
SHUTDOWN
GND
LOUT–
LOUT+
C7
C12
VDD GND
LIN–
GND
LIN+
VDD GND
RIN+
GND
RIN–
TPA2001D2 EVM
SLOP315 U1
R1
2000
+
+
S1
SHUTDOWN
GAIN0
GAIN1
C11
C9
C10
C5
C4
C3
C2
C1
C6
R2
R3
C8
C15
C16
Audio
Input
(Right)
Audio
Input
(Left)
External Shut
Down Control
(active low)
Right
Left
5 V

TPA2001D2 Audio Power Amplifier Evaluation Module Parts List
2-7
Operation
2.4.2 TPA2001D2 Audio Power Amplifier Evaluation Module Parts List
Table 2–6.TPA2001D2 EVM Parts List
Reference Description Size EVM
Qty. Manufacturer/ Part Number
C1–4,
C17–21 Capacitor, ceramic chip, 0.1 µF, ±10%, X7R, 50 V 0805 9 Kemet C0805C104K5RAC
C5 Capacitor, ceramic, 1.0 µF,
80%/–20%, Y5V, 16 V 0805 1 Murata GRM40-Y5V105Z16
C6, C8 Capacitor, ceramic, 10 µF,
80%/–20%, Y5V, 16 V 1210 2 Murata GRM235-Y5V106Z16
C7 Capacitor, ceramic, 220 pF,
±10%, XICON, 50 V 0805 2 Mouser
140–CC501B221K
C9 – C12†Not assembled 0805
C15, C16†Not assembled 1210
C13, C14 Reference designators not used
R1 – R4 Resistor, chip, 120 kΩ, 1/10 W,
5%, XICON 0805 4 Mouser 260–120K
S1 Switch, momentary pushbutton,
12 V, 50 mA 0.291 ×0.138 ×0.134” 1 Panasonic EVQ–PJS04K
GAIN0,
GAIN1 Header, 2 position 2 mm 2 Norcomp DigiKey # 2163–02–ND
Shunts 2 mm 2 3M
Headers, 0.1 in centers, 1/2 in
long 0.5 ×0.25 ×0.1” 17 Samtec T SW–19–8–G–S
U1 IC, TPA2001D2, audio power
amplifier, 2-W, 2-channel,
class-D
24 pin TSSOP 1 TI
TPA2001D2PWP
PCB PCB, TPA2001D2 EVM 2.25 X 1.5” 1 TI
SLOP315
†Capacitors C9 – C12, C15, and C16 are optional (not assembled) and pad locations for them on the EVM PCB have been
provided to increase design flexibility.

TPA2001D2 Filterless Class-D EVM Schematic
2-8
Operation
2.4.3 TPA2001D2 Filterless Class-D EVM Schematic
The TPA2001D2 filterless class-D EVM schematic is shown in Figure 2–5.
Figure 2–5.TPA2001D2 Class-D EVM Schematic Diagram
RIN–
RIN+
S1
SHUTDOWN
LIN–
TPA2001D2
U1
GND
LIN+
GND LOUT–
LOUT+
GND
VDD
++
VDD
GND
ROUT+
GND
ROUT–
GND
GAIN1
GAIN0
1
2
3
4
5
6
8
7
9
10
12
11
13
PGND
14
15
16
17
19
20
18
21
22
23
24
LOUTN
GAIN0
LPVDD
LINN
AGND
RINN
COSC
ROUTN
SHUTDOWN
RPVDD
PGND
PGND
BYPASS
LOUTP
LPVDD
LINP
ROSC
VDD
RINP
RPVDD
ROUTP
GAIN1
PGND
C18 0.1 µF
C4
0.1 µF
C1
0.1 µF
R3
120 kΩ
C3
0.1 µF
C2
0.1 µF
C7 220 pF
C9†
C17
0.1 µF
R1
120 kΩ
C12†
C11†
C19 0.1 µF
C8
10 µF
R2
120 kΩ
R4
120 kΩ
C20 0.1 µF
C5 1 µF
C6 10 µF
C10†
C15†
C16†
C21 0.1 µF
†Capacitors C9 – C12, C15, and C16 are optional (not assembled) and pad locations for them on the EVM PCB have been
provided to increase design flexibility.

TPA2001D2 Filterless Class-D EVM PCB Layers
2-9
Operation
2.4.4 TPA2001D2 Filterless Class-D EVM PCB Layers
The following illustrations depict the TPA2001D2 filterless class-D EVM PCB
assembly and layers. These drawings are not to scale. Gerber plots can be
obtained from any TI Sales Office.
Figure 2–6.TPA2001D2 Filterless Class-D EVM Top Assembly
Figure 2–7.TPA2001D2 FIlterless Class-D EVM Bottom Assembly

TPA2001D2 Filterless Class-D EVM PCB Layers
2-10
Operation
Figure 2–8.TPA2001D2 Filterless Class-D EVM Top Layer
Figure 2–9.TPA2001D2 Filterless Class-D EVM Bottom Layer