Texas Instruments TPA005D12 User Manual

TPA005D12 ClassĆD Stereo
Audio Power Amplifier
Evaluation Module

User’s Guide

August 1999 Mixed-Signal Products

SLOU051A

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 acknowledgement, 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.

CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER
CRITICAL APPLICA TIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERST OOD TO
BE FULLY AT THE CUSTOMER’S RISK.

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
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party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.

Copyright  1999, Texas Instruments Incorporated

Related Documentation From Texas Instruments

J

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.

J

TP A005D12 CLASS-D STEREO AUDIO POWER AMPLIFIER

(TI Literature Number SLOS246) This is the data sheet for the
TPA005D12 audio amplifier integrated circuit.

J

Design Considerations for Class-D Audio Power Amplifiers

(TI Literature Number SLOA031) This application report provides
detailed information on designing audio power amplifier systems
using TI class-D amplifier ICs

J

Reducing and Eliminating the Class-D Output Filter

(TI Literature Number SLOA023) This application report covers
output filter theory and design for class-D audio power amplifiers.

Preface

(TI 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.

Trademarks

TI is a trademark of Texas Instruments Incorporated.
PowerPAD is a trademark of Texas Instruments Incorporated.

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 TPA005D12 Class-D EVM Specifications 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 Quick Start 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1 Precautions 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2 Quick Start List for Platform 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.3 Quick Start List for Stand-Alone 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 Details 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1 Precautions 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2 The TPA005D12 Class-D Audio Power Amplifier Evaluation Module 3-3. . . . . . . . . . . . . . .

3.2.1 TPA005D12 Class-D Stereo Audio Amplifier IC 3-5. . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.2 Overview of Class-D Audio Amplifiers 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.3 Bridge-Tied Load (BTL) Operation 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.4 Class-D Differential Inputs 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.5 Control and Indicator Circuits 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.6 TPA005D12 Class-D EVM Test Points 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3 Class-D Amplifier Design Considerations 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4 Using The TPA005D12 Class-D EVM With the Plug-N-Play Platform 3-1 1. . . . . . . . . . . . .

3.4.1 Installing and Removing EVM Boards 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4.2 Module Switches 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4.3 Signal Routing 3-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4.4 Shutdown 3-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4.5 Power Requirements 3-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4.6 Inputs and Outputs 3-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.5 Using The TPA005D12 Class-D EVM Stand-Alone 3-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.5.1 Power Connections 3-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.5.2 Input Connections 3-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.5.3 Output Connections 3-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.5.4 Controls and Indicators 3-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.6 TPA005D12 Class-D EVM Performance Characteristics 3-20. . . . . . . . . . . . . . . . . . . . . . . .

3.7 TPA005D12 Class-D EVM Interconnects 3-24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.8 TPA005D12 Class-D EVM Bill of Materials 3-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.9 TPA005D12 Class-D EVM Schematic 3-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.10 TPA005D12 Class-D EVM PCB Layers 3-27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter Title—Attribute Reference

v

Running Title—Attribute Reference

Figures

1–1 The TI TPA005D12 Class-D Stereo Audio Power Amplifier EVM — Top View 1-3. . . . . . . . .

1–2 The TI TPA005D12 Class-D Stereo Audio Power Amplifier EVM — Bottom View 1-3. . . . . .

2–1 Quick Start Platform Map 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–1 The TI Plug-N-Play Audio Amplifier Evaluation Platform 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–2 The TI TPA005D12 Class-D Stereo Audio Power Amplifier EVM — Top View 3-4. . . . . . . . .

3–3 The TI TPA005D12 Class-D Stereo Audio Power Amplifier EVM — Bottom View 3-4. . . . . .

3–4 TPA005D12 Class-D EVM Schematic Diagram 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–5 Class-D Functional Diagram 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–6 Class-D Input and Output Waveforms 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–7 Platform Signal Routing and Outputs 3-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–8 Mute/Mode and Polarity Control 3-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–9 Typical Headphone Plug 3-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–10 TPA005D12 Class-D EVM Stand-Alone Connections for Stereo BTL Output 3-18. . . . . . . . .

3–11 Class-D Amplifier Frequency Response at 4 Ω 3-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–12 Class-D Amplifier Distortion versus Output Power at 4 Ω 3-21. . . . . . . . . . . . . . . . . . . . . . . . . .

3–13 Class-D Amplifier Distortion versus Output Power at 8 Ω 3-21. . . . . . . . . . . . . . . . . . . . . . . . . .

3–14 Class-D Amplifier Distortion versus Frequency at 1 W Into 4 Ω. 3-22. . . . . . . . . . . . . . . . . . . .

3–15 Class-D Amplifier Distortion versus Frequency at 1 W Into 8 Ω. 3-22. . . . . . . . . . . . . . . . . . . .

3–16 Class-D Amplifier Crosstalk versus Frequency at 2 W Into 4 Ω. 3-23. . . . . . . . . . . . . . . . . . . .

3–17 Class-D Amplifier Crosstalk versus Frequency at 2 W Into 8 Ω. 3-23. . . . . . . . . . . . . . . . . . . . .

3–18 TPA005D12 Class-D EVM Schematic Diagram 3-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–19 TPA005D12 Class-D EVM Top Assembly. 3-27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–20 TPA005D12 Class-D EVM Bottom Assembly 3-27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–21 TPA005D12 Class-D EVM Top Layer 3-28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–22 TPA005D12 Class-D EVM Second Layer . 3-28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–23 TPA005D12 Class-D EVM Third Layer. 3-29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–24 TPA005D12 Class-D EVM Bottom Layer . 3-29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

T ables

2–1 Typical TI Plug-N-Play Platform Jumper and Switch Settings for the

2–2 Platform Jumper and Switch Settings for the TPA005D12 2-3. . . . . . . . . . . . . . . . . . . . . . . . . .

3–1 TPA005D12 Class-D EVM Fault Indicator Table 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–2 TPA005D12 Class-D EVM Test Points 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–3 Platform Jumper and Switch Settings for the TPA005D12 EVM Power Inputs 3-16. . . . . . . .

3–4 TPA005D12 Class-D EVM/Plug-N-Play Platform Interconnects 3-24. . . . . . . . . . . . . . . . . . . . .

3–5 TPA005D12 Class-D EVM Bill of Materials 3-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

vi

TPA005D12 Class-D EVM 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 1

Introduction

This chapter provides an overview of the T exas Instruments (TI) TP A005D12
class-D stereo audio power amplifier evaluation module (SLOP246). 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 A005D12 Class-D EVM Specifications 1–4. . . . . . . . . . . . . . . . . . . . . . . .

Introduction

1-1

Feature Highlights

1.1 Feature Highlights

The TI TPA005D12 class-D stereo audio power amplifier evaluation module
and the TI plug-n-play audio amplifier evaluation platform include the following
features:

-

TPA005D12 Class-D Stereo Audio Power Amplifier Evaluation Module

J

J

J

J

J

J

J

J

J

Internal depop circuitry to greatly reduce turn-on transients in outputs
Dual channel, bridge-tied load (BTL) only operation
5 V operation
2 W BTL output into 4 Ω at 5 V
Low current consumption in shutdown/mute mode (50 µA/2.5 mA)
Internal gain set to 20 dB
IC shutdown and mute control inputs — TTL logic level
High efficiency
CE tested and approved.

-

Quick and Easy Configuration With The TI Plug-N-Play Audio Amplifier
Evaluation Platform

J

Evaluation module is designed to simply plug into the platform,
automatically making all signal, control, and power connections

J

Platform provides flexible power options

J

Jumpers on the platform select power and module control options

J

Switches on the platform route signals

J

Platform provides quick and easy audio input and output connections

-

Platform Power Options

J

External 5-V – 15-V VCC supply inputs

J

External regulated VDD supply input

J

Socket for onboard 5 V/3.3 V VDD voltage regulator EVM

J

Onboard overvoltage and reverse polarity power protection

-

Platform Audio Input and Output Connections

J

Left and right RCA phono jack inputs

1-2

J

Miniature stereo phone jack input

J

Left and right RCA phono jack outputs

J

Left and right compression speaker terminal outputs

J

Miniature stereo headphone jack output

Introduction

1.2 Description

Description

The TP A005D12 class-D stereo audio power amplifier evaluation module is a
complete, 2-Watt per channel stereo audio power amplifier. It consists of the
TI TPA005D12 class-D stereo audio power amplifier IC along with a small
number of other parts mounted on a circuit board that measures approximately
2¼ inches by 2¼ inches (Figure 1–1 and 1–2).

Figure 1–1.The TI TPA005D12 Class-D Stereo Audio Power Amplifier EVM —

L4

TP11

TP9

GND

L2

VDD2
C14

SLOP246 TPA005D12 EVM Board

Rout+

+

TP7

TP3

TP2

GND

C18

C5

C4

Rout–

TP12

TP1

+RIN–

Mute

Texas
Instruments
1999

TP10

C19

U1

C1

SD

TP6

S2

TP5

TP4

S1

Mute

–LIN+GND

C3

Lout–

C13

C2

Lout+

L3

L1

TP8

+

R2
R1

SD

Figure 1–2.The TI TPA005D12 Class-D Stereo Audio Power Amplifier EVM —

Top View

GND

VDD

Bottom View

C20

C24

C9

C21

C10

C6

C8

C17

C15

C22

C11

C7

C16

C25

C12

Introduction

C23

1-3

TPA005D12 Class-D EVM Specifications

Single in-line header pins extend from the underside of the module circuit
board to allow the EVM to either 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.

The platform has room for a single TP A005D12 class-D evaluation module and
is a convenient vehicle for demonstrating TI’s audio power amplifier and
related evaluation modules. The EVM simply plugs 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 hook up.

1.3 TPA005D12 Class-D EVM Specifications

All measurements made with VDD = 5 V and RL = 4 Ω, unless otherwise noted.

1.3.1 Maximum

Supply voltage range, V
Supply current, I

DD

Continuous output power per channel, BTL, P
Audio input voltage, V

DD

I

1.3.2 Typical

Supply current, no input, I
Supply current, EVM mute, I
Supply current, EVM shutdown, I
Gain

20 dB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Crosstalk, P

= 2 W @ 1 kHz –60 dB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

O

Total harmonic distortion + noise, P

DD

DD

DD

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

2 W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

O

= 1 W @ 1 kHz 0.1 %. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

O

2.3 A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

280 mVrms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

35 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.5 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

50 µA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-4

Introduction

Chapter 2

Quick Start

Follow the steps in this chapter to quickly prepare the TPA005D12 class-D
stereo audio amplifier EVM for use. Using the TP A005D12 class-D EVM 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 it 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
TPA005D12 class-D EVM. There are no jumpers or switches to set on
the TPA005D12 class-D EVM board, itself.

Table 2–1. Typical TI Plug-N-Play Platform Jumper and Switch Settings for the
TPA005D12 Class-D EVM

POWER TYPE (Note 2) JP4 JP5 JP6 JP7 JP8 S1 S2 (Note3) S3

VDD (J6) X ON Mute X Lo X OFF U5

Notes: 1) ON = Jumper installed, OFF = Jumper

2) Unregulated and battery sources must have a voltage regulator EVM (SLVP097) installed in platform socket U6 (see
table 3–4, Section 3.5.5 for these options).

3) Set to ON when tone control board SLOP109 is installed in U1.

NOT

Installed, X = Don’t care

T opic 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Quick Start

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 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.

In

+

Power

Audio
Input

Input

In

9
10
14

Quick Start Platform Map

SOURCE

J1

VCC

D4

AC/DC

J2

Right

In

Stereo

In

Left

In

INSTRUMENTS

1997

J3

J4

J5

JP2

JP1

DC

VCC(J1)

AC/DC

(J2)

Batt

D1

D2

D3

Signal Conditioning

Do not insert or remove
EVM boards with power

TEXAS

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

JP3

VR1

F1

VCC

C1+

LED1

****CAUTION****

applied

R1

U1

Off Pwr

1

GND

On

S1

Audio
Power
Amps

OnOff

ConditioningS2

TP1

ICC
JP4

B1

IDD

U5

8

JP5

U3 U4

R2

U2-U4

U5

HP

Source

SUPPLY

U2

HP(U5)

S3

R4

POWER

U6

LED2

VDD

JP6

Polarity

Lo
Hi

JP7

+
+

R3

J7

Out

Out

Out

Mode
Mute

Spk(U2-U4)

Out

JP8

C3 C2

HP Out

F2

Right

J8

+– +–

Right

Left

J9

Left

Stereo

In/Out

VDD

J10

R5

J6

VR2

DC
Power
In/Out

7

12

+

Speaker
Output

11

Headphone
Output

5

2-2

13

3

2

4 6

Quick Start

2.2 Quick Start List for Platform

Follow these steps when using the TPA005D12 class-D EVM with the TI
plug-n-play audio amplifier evaluation platform (see the platform user’s guide,
SLOU011, for additional details). Numbered callouts for selected steps are
shown in Figure 2–1 and details appear in Chapter 3.

-

Platform Preparations

Quick Start List for Platform

1) Ensure that all external power sources are set to

OFF

.

2) Install a TP A005D12 module in platform socket U2, taking care to align the
module pins correctly (EVM power pins engage sockets U2 and U3).

3) Set switch S2 to

OFF

.

4) Set switch S3 to U5.

5) Set jumper JP6 to select the

6) Set control signal Polarity jumper JP8 to

Mute

control input.

Lo.

Table 2–2. Platform Jumper and Switch Settings for the TPA005D12

POWER TYPE (Note 2) JP4 JP5 JP6 JP7 JP8 S1 S2 (Note 3) S3

VDD (J6) X ON Mute X Lo X OFF U5

Notes: 1) ON = Jumper installed, OFF = Jumper

2) Unregulated and battery sources must have a voltage regulator EVM (SLVP097) installed in platform socket U6.

3) Set to ON when tone control board SLOP109 is installed in U1.

-

Power supply

7) Connect a

OFF

) to J6, taking care to observe marked polarity.

8) Set jumper JP5 for VDD power to EVMs.

-

Inputs and outputs

NOT

Installed, X = Don’t care

5-V

regulated power supply (ensure power supply is set to

9) Ensure that the audio signal source level is set to minimum.

10) Connect the audio source to left and right RCA phono jacks J3 and J5 or
stereo miniature phone jack J4.

11) Connect 4-Ω – 8-Ω speakers to left and right RCA jacks J7 and J9 or to
stripped wire speaker connectors J8.

-

Power up

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

ON.

Platform LED2 should light indicating the presence of VDD, and the evaluation
module(s) installed on the platform should begin operation.

13) Set switch S2 to ON if tone control board SLOP109 is installed in U1.

14) Adjust the signal source level as needed.

Quick Start

2-3

Quick Start List for Stand-Alone

2.3 Quick Start List for Stand-Alone

Follow these steps to use the TPA005D12 class-D EVM stand-alone or to
connect it into existing circuits or equipment. Connections to the TP A005D12
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.

-

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,
VDD2, and GND pins taking care to observe marked polarity. It is only

necessary to use the ground pins adjacent to the module power pins.

-

Inputs and outputs

3) Ensure that audio signal source level adjustments are set to minimum.

4) Connect the audio source to the module RIN+/RIN– and LIN+/LIN– pins
for class-D operation, taking care to observe marked polarity. For
single-ended input, the negative input pins (RIN– and LIN–) should be
connected to the ground of the audio signal source.

5) Connect a control signal to the module Mute pin, if necessary . The control
signal should be high (2 V to 5 V or left floating) for normal operation, or
low (tied to ground) to mute the output.

6) Connect a control signal to the module SD pin, if necessary. The control
signal should be high (2 V to 5 V or left floating) for normal operation, or
low (tied to ground) to shut down the TPA005D12 amplifier IC on the EVM.

Note that the control signals applied to the EVM mute and SD inputs must have
sufficient current capability to overcome the 100-kΩ pullup resistor on each
input. Miniature pushbutton switches on the EVM allow manual shutdown (S2)
and manual muting (S1) of the amplifier.

2-4

7) Connect a 4-Ω – 8-Ω speaker to the module Rout+/Rout– pins and
another speaker to the Lout+/Lout– pins, taking care to observe marked
polarity .

-

Power up

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

ON.

The EVM should begin operation.

9) Adjust the signal source level as needed.

Quick Start