Texas Instruments TPA701 User Manual

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TPA701 MSOP Audio Power

Amplifier Evaluation Module

User's Guide

November 1998

Mixed-SignalProducts

SLOU026A

IMPORTANT NOTICE

Texas 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 (ªCRITICAL APPLICATIONSº). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORTDEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD 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 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 1998, Texas Instruments Incorporated

Preface

Related Documentation From Texas Instruments

JTI Plug-N-PlayAudio Amplifier Evaluation Platform(literature number SLOU011) provides detailed information on the evaluation platform and its use with TI audio evaluation modules.

JTPA701 700-mWLOW-VOLTAGEAUDIO POWER AMPLIFIER

(literature number SLOS229) This is the data sheet for the TPA701 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.

Trademarks

TI is a trademark of Texas Instruments Incorporated.

Chapter TitleÐAttribute Reference

iii

iv

Running TitleÐAttribute Reference

Contents

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

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

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

1.3 TPA701 EVM Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

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

2.1 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22.2 Quick Start List for Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-32.3 Quick Start List forStand-Alone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4

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

3.1

Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-2

3.2

The TPA701 MSOP Audio Amplifier Evaluation Module . . . . . . . . . . . . . . . . . . . . . . . . . .

3-3

 

3.2.1 TPA701 Audio Amplifier IC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-4

 

3.2.2

BTL Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-4

 

3.2.3

Module Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-4

 

3.2.4

Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-5

3.3

Using The TPA701 MSOP EVM With The Plug-N-PlayEvaluation Platform . . . . . . . . .

3-6

 

3.3.1 Installing and Removing EVM Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-6

 

3.3.2

Signal Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-7

 

3.3.3

Mute/Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-7

 

3.3.4

Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-9

 

3.3.5

Inputs and Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-9

3.4

Using The TPA701 MSOP EVM Stand-ALone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-11

 

3.4.1 TPA701 MSOP EVM Connected for BTL Output . . . . . . . . . . . . . . . . . . . . . . . .

3-11

3.5

TPA701 MSOP Audio Amplifier Evaluation Module Parts List . . . . . . . . . . . . . . . . . . . .

3-12

Chapter TitleÐAttribute Reference

v

Running TitleÐAttribute Reference

Figures

1±1 The TI TPA701 MSOP Audio Amplifier Evaluation Module . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32±1 Quick Start Platform Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-22±2 Quick Start Module Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-43±1 The TIPlug-N-PlayAudio Amplifier Evaluation Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-23±2 TPA701 MSOP EVM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-33±3 TPA701 MSOP EVM Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-33±4 TPA701 Audio Amplifier IC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-43±5 Platform Signal Routing and Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-73±6 Mute/Mode and Polarity Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-83±7 Typical Headphone Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-103±8 TPA701 MSOP EVM Connected for Stereo BTL Output . . . . . . . . . . . . . . . . . . . . . . . . . . .3-11

Tables

2±1 Typical TI Plug-N-PlayPlatform Jumper and Switch Settings for the

 

 

TPA701 MSOP EVM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-1

2±2

Platform Jumper and Switch Settings for the TPA701 MSOP EVM . . . . . . . . . . . . . . . . . . .

2-3

3±1

TPA701 MSOP EVM Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-12

vi

Chapter 1

Introduction

This chapter provides an overview of the Texas Instruments (TI ) TPA701 MSOP Audio Amplifier Evaluation Module (SLOP213). 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

TPA701 MSOP EVM Specifications . . . . . . . . . . . . . . . . . . . . . . . . .

1±4

 

 

 

Introduction 1-1

Feature Highlights

1.1 Feature Highlights

The TI TPA701 MSOP Audio Amplifier Evaluation Module and the TI Plug-N-PlayAudio Amplifier Evaluation Platform include the following features:

-TPA701 Low-VoltageAudio Power Amplifier Evaluation Module

J Single channel,bridge-tiedload (BTL)

J 3.3-Vand5-Voperation

J 700-mWoutput power into 8Ω at 5 V, BTL

J Ultra-lowcurrent consumption in shutdown mode

J Internal thermal andshort-circuitprotection

J Module gain is set at ±4 V/V in BTL mode, ±2 V/V in SE mode

-Quick and Easy Configuration with The TI Plug-N-PlayAudio Amplifier

Evaluation Platform

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

JPlatform provides flexible power options

JJumpers on the platform select power and module control options

JSwitches on the platform route signals

JPlatform provides quick and easy audio input and output connections

-Platform Power Options

JOn-board9-Vbattery

JExternal 5-V±15-V(VCC) supply inputs

JExternal regulated VDD supply input

JSocket for on-board5 V/3.3 V VDD voltage regulator EVM

JOn-boardovervoltage and reverse polarity power protection

-Platform Audio Input and Output Connections

JLeft and right RCA phono jack inputs

JMiniature stereo phone jack input

JLeft and right RCA phono jack outputs

JLeft and right compression speaker terminal outputs

JMiniature stereo headphone jack output

1-2

Introduction

Description

1.2 Description

The TPA701 MSOP Audio Power Amplifier Evaluation Module is a complete, low-powersingle-channelaudio power amplifier. It consists of the TI TPA701700-mWLow-VoltageAudio Power Amplifier IC in a very small MSOP package, along with a small number of other parts mounted on a circuit board that is approximately one and a quarter inches square (Figure 1±1).

Figure 1±1. The TI TPA701 Audio Amplifier Evaluation Module

 

 

 

 

 

 

 

 

 

 

 

 

Vdd

GND

Shutdown

 

 

 

 

 

 

S1

 

 

 

 

 

 

 

 

 

+

 

 

C3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R1

²

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

U1

 

 

 

C4

 

 

 

 

C1

 

 

 

 

 

 

OUT±

 

 

 

R2

 

 

 

 

 

 

 

 

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

OUT+

 

 

 

C2

 

 

R3

 

 

 

 

 

 

 

 

 

 

 

 

C5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TEXAS

 

INSTRUMENTS

IN

SLOP213

GND

TPA701 MSOP EVM

 

² Due to the very small size of the MSOP IC package, the standard part number TPA701 is replaced with the code TIABA.

Single in-lineheader pins are mounted to the underside of the module circuit board to allow the EVM to be plugged into the TIPlug-N-PlayAudio Amplifier Evaluation Platform or to be wired directly into existing circuits and equipment when usedstand-alone.

The platform has room for a pair of TPA701 MSOP evaluation modules 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-useconfiguration controls allow the platform and EVMs to quickly model many possibleend-equipmentconfigurations.

There is nothing to build, nothing to solder, and nothing but the speakers included with the platform to hook up.

Introduction 1-3

TPA701 EVM Specifications

1.3 TPA701 EVM Specifications

Supply voltage range, VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.5 V to 5.5 V

Supply current, IDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

450 mA, max

Continuous output power, PO:8-Ω BTL, VDD =5 V . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . 700 mW

Audio input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 2 Vpp, max

Minimum load impedance, RL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . 8 Ω

1-4

Introduction