Texas Instruments TPA0103 User Manual

TPA0103
Audio Power Amplifier
Evaluation Module

User’s Guide

August 1998 Mixed-Signal Products

SLOU015

IMPORTANT NOTICE

T exas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
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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.

CERT AIN 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
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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
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Copyright  1998, 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 A0103 3-CHANNEL AUDIO POWER AMPLIFIER STEREO
SINGLE-ENDED 500-mW AND MONO BTL 1.75-W

number SLOS167) This is the data sheet for the TPA0103 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
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.

Preface

(literature

(literature

Trademarks

TI 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 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 Description 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3 TP A0103 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 TPA0103 Audio Amplifier Evaluation Module 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.1 TPA0103 Audio Amplifier IC 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.2 Output Modes 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.3 Inputs and Gain 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3 Using The TPA0103 EVM With The Plug-N-Play Evaluation Platform 3-7. . . . . . . . . . . . . .

3.3.1 Installing and Removing EVM Boards 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.2 TPA0103Module Jumper Settings 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.3 Signal Routing 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.4 Mode Control 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.5 Power Requirements 3-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.6 Inputs and Outputs 3-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4 Using The TPA0103 EVM Stand-ALone 3-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4.1 TPA0103 EVM Connected for Center Channel BTL Output 3-16. . . . . . . . . . . . . . .

3.4.2 TPA0103 EVM Connected for Stereo Headphones Output 3-17. . . . . . . . . . . . . . .

3.5 TPA0103 Audio Amplifier Evaluation Module Parts List 3-18. . . . . . . . . . . . . . . . . . . . . . . . .

Chapter Title—Attribute Reference

v

Running Title—Attribute Reference

Figures

1–1 The TI TPA0103 Audio Amplifier Evaluation Module 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

2–2 Quick Start Module Map 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

3–2 TPA0103 EVM 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–3 TPA0103 EVM Schematic Diagram 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–4 TPA0103 Audio Amplifier IC 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–5 TPA0103 EVM Jumpers 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–6 Platform Signal Routing and Outputs 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–7 Mute/Mode and Polarity Control 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–8 Typical Headphone Plug 3-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–9 TPA0103 EVM Connected for Center Channel BTL Output 3-16. . . . . . . . . . . . . . . . . . . . . . . .

3–10 TPA0103 EVM Connected for Stereo Headphones Output 3-17. . . . . . . . . . . . . . . . . . . . . . . . .

T ables

2–1 Typical TI Plug-N-Play Platform Jumper and Switch Settings for the TPA0103 2-1. . . . . . . . .

2–2 Typical TPA0103 EVM Jumper Settings 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–3 TI Plug-N-Play Platform Jumper and Switch Settings for the TPA0103 2-3. . . . . . . . . . . . . . .

2–4 TPA0103 EVM Jumper Settings 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–5 TPA0103 EVM Stand-Alone Jumper Settings 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–1 TPA0103 Output Modes 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–2 TPA0103 Output Modes 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–3 Typical TPA0103 EVM Jumper Settings for Center Channel BTL Stand-Alone 3-16. . . . . . . .

3–4 Typical TPA0103 EVM Jumper Settings for Stereo Headphones Output 3-17. . . . . . . . . . . . .

3–5 TPA0103 EVM Parts List 3-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

vi

Chapter 1

Introduction

This chapter provides an overview of the Texas Instruments (TI) TPA0103
Audio Amplifier Evaluation Module (SLOP103). 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 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 Description 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3 TP A0103 EVM Specifications 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction

1-1

1-2

Introduction

1.1 Feature Highlights

The TI TPA0103 Audio Amplifier Evaluation Module and the TI Plug-N-Play
Audio Amplifier Evaluation Platform include the following features:

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TPA0103 Low-Voltage Audio Power Amplifier Evaluation Module

J

J

J

J

J

J

J

-

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

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Feature Highlights

535-mW single-ended into 4 Ω at 5 V L/R channels

1.75-W bridge-tied load (BTL) into 4 Ω at 5 V center channel

3.3-V and 5-V operation
Low distortion (< 0.25% THD+N at full power)
Ultra-low current consumption in full shutdown mode
Two sets of stereo inputs with internal MUX
Module gain adjustable between approximately 2 and 22

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

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Platform provides flexible power options

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Jumpers on the platform select power and module control options

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Switches on the platform route signals

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Platform provides quick and easy audio input and output connections

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Platform Power Options

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Onboard 9-V battery

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External 5-V – 15-V DC VCC supply inputs

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External regulated VDD supply input

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

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Onboard overvoltage and reverse polarity power protection

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Platform Audio Input and Output Connections

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Left and right RCA phono jack inputs

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Miniature stereo phone jack input

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Left and right RCA phono jack outputs

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Left and right compression speaker terminal outputs

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Miniature stereo headphone jack output

Introduction

1-3

Description

1.2 Description

The TPA0103 Audio Power Amplifier Evaluation Module is a complete,
low-power three-channel audio power amplifier. It consists of the TI TPA0103
3-Channel Audio Power Amplifier IC along with a small number of other parts
mounted on a circuit board that measures approximately 2¼ inches by 1
inches (Figure 1–1).

Figure 1–1.The TI TPA0103 Audio Amplifier Evaluation Module

½

RHP
GND
RIN
GND

GND
LIN

GND
LHP

R15

R16

R18

C1

C2

C7

C6

R1

C8

C3

R10

R3

VDD GND

+

C11

R7R8

R14

R9

R17

U1

R4

C12

R13

R2

–3

009228

C5

S3
S4

C10C9

S1

R5

R11

ROUT+

S5

COUT–

MODE A

R12

MODE B

TPA0103 EVM

REV. A

Lit.# SLOP103

S2

R6

SDWN

COUT+

LOUT+

GND

HP/L*

GND

Single in-line header pins are mounted to 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.

The platform has room for a single TPA0103 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 “hook up.”

1.3 TPA0103 EVM Specifications

Supply voltage range, V
Supply current, I
Continuous output power, P

Audio input voltage, V

Minimum load impedance, R

1-4

DD

DD

: center channel, THD = 0.2%, 4-Ω BTL, VDD=5 V: 1.75 W. . . .

O

L/R channels, THD = 0.2%, 4-Ω SE, V
L/R channels, THD = 0.2%, 32-Ω SE, V

: L/R IN, gain = 2 – 22 BTL 0.75 VPP, max. . . . . . . . . . . . . . . . . .

I

L/R IN HP, gain = 1 4 V

L

=5 V: 535 mW. . . . . .

DD

=5 V: 100 mW. . . .

DD

3 V to 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.5 A, max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

, max. . . . . . . . . . . . . . . . . . . . . . . . . .

PP

4 Ω. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction