Texas Instruments TPA2001D2 User Manual

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User’s Guide

November 2000 Mixed-Signal Products

SLOU093

IMPORTANT NOTICE

T exas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
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
TI deems necessary to support this warranty . Specific testing of all parameters of each device is not necessarily
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.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent

that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
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

Related Documentation From Texas Instruments



TI Plug-N-Play Audio Amplifier Evaluation Platform

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

for the TPA2001D2 audio amplifier integrated circuit.

(literature number SLOS292) This is the data sheet

Running Title—Attribute Reference

Preface

Read This First

(literature

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
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
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.

Chapter Title—Attribute Reference

iii

iv

Running Title—Attribute Reference

Contents

1 Introduction 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1 Feature Highlights 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 Description 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3 TP A2001D2 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. . . . . . . . . . . . . . . . . . . . . . . .

Chapter Title—Attribute Reference

v

Running Title—Attribute Reference

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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

T ables

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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

vi

Chapter 1

Introduction

This chapter provides an overview of the Texas Instruments (TI) TPA2001D2
filterless class-D audio amplifier evaluation module (SLOP315). It includes a
list of EVM features, a brief description of the module illustrated with a pictorial
diagram, and a list of EVM specifications.

Topic Page

1.1 Feature Highlights 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 Description 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3 TP A2001D2 EVM Specifications 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1

Feature Highlights

1.1 Feature Highlights

The TI TP A2001D2 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 Ω at 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
 Platform provides quick and easy audio input and output connections

 Platform Power Options

 External 5-V – 15-V dc V
 External regulated V
 Socket for onboard 5 V/3.3 V V
 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

DD

supply inputs

CC

supply input

voltage regulator EVM

DD

 Left and right compression speaker terminal outputs
 Miniature stereo headphone jack output

1-2

Introduction

Description

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
RIN+
RIN–

SHUTDOWN

S1

LIN–
LIN+

GND

C16

TPA2001D2 EVM

SLOP315

+

2000

C15

+

VDD GND

C8

C4
C3
R2
C2

C1

C6

R3

VDD GND

C11

C10

U1

C5

C12

C9

SHUTDOWN

ROUT+

GND

ROUT–

GAIN1

C7

GAIN0

R1

LOUT–

GND

LOUT+

Figure 1–2.The TI TPA2001D2 Audio Amplifier EVM Without Output Filter—Bottom View

C21

C17

C20

C18

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
evaluation platform, or to be wired directly into existing circuits and equipment
when used stand-alone.

C19

R4

Introduction

1-3

TPA2001D2 EVM Specifications

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,
and connects them to a versatile array of standard audio input and output jacks
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

1.3 TPA2001D2 EVM Specifications

hook up

.

Supply voltage range, V
Supply current, I

DD

DD

Continuous output power per channel, PO: 8 Ω, V
Minimum load impedance, R

L

4.5 V to 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

= 5 V 1 W. . . . . . . . . . . . . . . . . . . . . . . . . . .

DD

1 A max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8 Ω. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-4

Introduction

Chapter 2

Operation

The steps in this chapter can be followed to quickly prepare the TP A2001D2
filterless class-D audio amplifier EVM for use. Using the TP A2001D2 with the
TI plug-n-play audio amplifier evaluation platform is a quick and easy way to
connect power, signal and control inputs, and signal outputs to the 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.

The platform switch and jumper settings shown in T able 2–1 are typical for the
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

2) Set S2 to ON when signal conditioning board is installed in U1; set S2
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

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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NOT

Installed, X = Don’t care

NOT

Installed, X = Don’t care

Operation

2-1

Precautions

2.1 Precautions

Power Supply Input Polarity and Maximum Voltage
Always ensure that the polarity and voltage of the external power

connected to V
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

power input connector J1, J2, and/or VDD power

CC

Power

Input

Audio
Input

7b

Off Pwr

1

12

On

ICC
JP4

S1

7b 7b

SUPPLY

POWER

U6

F2

VR2

7a

7b

SOURCE

J1

VCC

In

+

DC

VCC(J1)

JP1

(J2)

JP2

AC/DC

Batt

JP3

VR1

F1

C1+

DC

D4

AC/DC

In

J2

In

Right

J3

D3

D2

D1

LED1

VCC

R1

Signal Conditioning

Stereo

J4

9

In

U1

B1

Audio
Power
Amps

IDD

JP5

U3 U4

R2

U2

VDD

LED2

Out

J7

Right

J8

Out

+– +–
Right

In/Out

VDD

J6

Power
In/Out

+

10

Speaker
Output

5

Headphone
Output

Left

J5

In

TEXAS

INSTRUMENTS

1997

****CAUTION****
Do not insert or remove
EVM boards with power

applied

Plug-N-Play Audio Amplifier
Evaluation Platform
SLOP097 Rev. C.1

ConditioningS2

GND

OnOff

TP1

U5

U2-U4

U5

HP

Source

HP(U5)

S3

R4

JP6

Polarity

Lo
Hi

JP7

+
+

R3

Out

Mode
Mute

Spk(U2-U4)

Out

JP8

C3 C2

HP Out

Left

J9

Left

Stereo

J10

R5

2-2

23 4

6

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

Quick Start List for Platform

1) Ensure that all external power sources are set to
power switch S1 is set to

OFF.

2) Install a TPA2001D2 module in platform socket U2, taking care to align the
module pins correctly.

3) Use switch S2 to select or bypass the signal conditioning EVM (U1).

4) Set control signal Polarity jumper JP8 to

5) Set jumper JP6 to select the

Mute

control input (causes the TP A2001D2

Lo.

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

2) Set S2 to
to

 Power supply

ON

OFF

when signal conditioning board is installed in U1; set S2

when no signal conditioning board is installed.

NOT

Installed, X = Don’t care

OFF

and that the platform

7) Select and connect the power supply (ensure power supply is set to
a) Connect an external regulated power supply set to 5 V to platform V

OFF

DD

power input connector J6 taking care to observe marked polarity,
or

b) Install a voltage regulator EVM (SL VP097 or equiv .) in platform socket

U6. Connect a 7-V – 12-V power source to a platform VCC power input
J1 or J2 and jumper the appropriate power input (see platform user’s
guide). If using J1, J2, or B1, set S1 to ON to supply power to the EVM.

 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) Connect speakers to left and right RCA jacks J7 and J9 or to stripped wire
speaker connectors J8.

Operation

2-3

):

Quick Start List for Platform

 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

+

GND
RIN+
RIN–

SHUTDOWN

S1

LIN–
LIN+
GND

C16

TPA2001D2 EVM

SLOP315

VDD GND

2000

C15

+

C8

C4
C3
R2
C2

C1

C6

R3

VDD GND

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

ROUT+

GND

ROUT–

C12

C11

C9

C10

U1

C5

GAIN0

SHUTDOWN

LOUT–

GND

LOUT+

GAIN1

C7

R1

11

2-4

 Power Up

12) Verify correct voltage and input polarity and set the external power supply

ON.

If VCC and an onboard regulator EVM are used to provide VDD, set

to
platform power switch S1 to

ON.

Platform LED2 should light indicating the presence of VDD, and the evaluation
modules installed on the platform should begin operation.

13) Adjust the signal source level as needed.

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

Quick Start List for Stand-Alone

2

+

2000

C15

+

VDD GND

C8

C4
C3
R2
C2

C1

C6

R3

VDD GND

C11

C10

U1

C5

GND

4

4

RIN+
RIN–

SHUTDOWN

S1

LIN–
LIN+
GND

C16

TPA2001D2 EVM

SLOP315

C12

C9

SHUTDOWN

ROUT+

GND

ROUT–

GAIN0

LOUT–

GND

LOUT+

GAIN1

C7

R1

5

6

7

5

 Power supply

1) Ensure that all external power sources are set to

OFF.

2) Connect an external regulated power supply set to 5 V to the module 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

5) Connect the right (left) positive lead of the speaker to the module ROUT+

RIN+ (LIN+) pins and the negative lead to the RIN– (LIN–) pins.

(LOUT+) pins and the negative lead to the ROUT– (LOUT–) pins.

Operation

2-5

Reference

 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 set the external power supply
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

+

2000

C15

+

VDD GND

C8

C4
C3

R2

C2
C1

C6

R3

VDD GND

C11

C10

U1

C5

Audio

Input

(Right)

Audio

Input
(Left)

GND
RIN+
RIN–

SHUTDOWN

S1

LIN–
LIN+
GND

C16

TPA2001D2 EVM

SLOP315

C12

C9

SHUTDOWN

ROUT+

GND

ROUT–

GAIN0

LOUT–

GND

LOUT+

GAIN1

C7

R1

Right

External Shut

Down Control

(active low)

Left

2-6

5 V

Operation

TP A2001D2 Audio Power Amplifier Evaluation Module Parts List

2.4.2 TPA2001D2 Audio Power Amplifier Evaluation Module Parts List

Table 2–6.TPA2001D2 EVM Parts List

Reference Description Size

C1–4,
C17–21

C5 Capacitor, ceramic, 1.0 µF,

Capacitor, ceramic chip, 0.1 µF,
±10%, X7R, 50 V

0805 9 Kemet

0805 1 Murata

80%/–20%, Y5V, 16 V

C6, C8 Capacitor, ceramic, 10 µF,

1210 2 Murata

80%/–20%, Y5V, 16 V

C7 Capacitor, ceramic, 220 pF,

0805 2 Mouser

±10%, XICON, 50 V
C9 – C12
C15, C16

†

Not assembled 0805

†

Not assembled 1210
C13, C14 Reference designators not used
R1 – R4 Resistor, chip, 120 kΩ, 1/10 W,

0805 4 Mouser

5%, XICON
S1 Switch, momentary pushbutton,

0.291 × 0.138 × 0.134” 1 Panasonic

12 V, 50 mA
GAIN0,

Header, 2 position 2 mm 2 Norcomp
GAIN1

EVM

Qty.

Manufacturer/

Part Number

C0805C104K5RAC

GRM40-Y5V105Z16

GRM235-Y5V106Z16

140–CC501B221K

260–120K

EVQ–PJS04K

DigiKey # 2163–02–ND
Shunts 2 mm 2 3M
Headers, 0.1 in centers, 1/2 in

long

U1 IC, TPA2001D2, audio power

amplifier, 2-W, 2-channel,

0.5 × 0.25 × 0.1” 17 Samtec T
SW–19–8–G–S

24 pin TSSOP 1 TI

TPA2001D2PWP

class-D

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 .

Operation

2-7

TPA2001D2 Filterless Class-D EVM Schematic

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

GND

C1

0.1 µF

LIN+

R3

120 kΩ

C2

0.1 µF

LIN–

C3

0.1 µF

RIN–

RIN+

C4

0.1 µF

GND

SHUTDOWN

†

Capacitors C9 – C12, C15, and C16 are optional (not assembled) and pad locations for them on the EVM PCB have been

GAIN0

R1

120 kΩ

C12

†

C9

C17

0.1 µF

C7 220 pF

C18 0.1 µF

S1

†

1

PGND

2

LOUTN

3

GAIN0

4

LPVDD

5

LINN

6

AGND

7

COSC

8

RINN

9

RPVDD

10

SHUTDOWN

11

ROUTN

12

PGND

U1

TPA2001D2

PGND

LOUTP

BYPASS

LPVDD

LINP

VDD

ROSC

RINP

RPVDD

GAIN1

ROUTP

PGND

24

C10

23
22
21

C21 0.1 µF

20
19
18

C20 0.1 µF

17
16
15

C19 0.1 µF

14
13

C11

†

C5 1 µF

C6 10 µF

R2

120 kΩ
C8

10 µF

†

C16

+

†

R4

120 kΩ

+

GAIN1

†

C15

LOUT–

GND

LOUT+

VDD
VDD

ROUT+
GND

GND

GND

ROUT–

provided to increase design flexibility .

2-8

Operation

TPA2001D2 Filterless Class-D EVM PCB Layers

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

Operation

2-9

TPA2001D2 Filterless Class-D EVM PCB Layers

Figure 2–8.TPA2001D2 Filterless Class-D EVM Top Layer

Figure 2–9.TPA2001D2 Filterless Class-D EVM Bottom Layer

2-10

Operation