Texas Instruments TPA311 Bedienungsanleitung

2001 Mixed-Signal Products

TPA311

Audio Power Amplifier

Evaluation Module

User’s Guide

SLOU013A

IMPORTANT NOTICE

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to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except

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Customers are responsible for their applications using TI components.

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iii

Chapter Title—Attribute Reference

Preface

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.

TPA311 350-mW Low-Voltage Audio Power Amplifier (literature

number SLOS207) This is the data sheet for the TPA311 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

testedfor compliance with thelimitsof computing devices pursuanttosubpart

Jofpart 15of FCCrules, whicharedesignedtoprovidereasonableprotection

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.

Running Title—Attribute Reference

Chapter Title—Attribute Reference

Contents

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

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

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

1.3 TPA311 EVM Specifications 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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 TPA311 Audio Amplifier Evaluation Module 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.1 TPA311 Audio Amplifier IC 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.2 BTL Operation 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.3 Single-Ended Operation 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.4 Module Gain 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.5 Shutdown 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3 Using The TPA311 EVM With The Plug-N-Play Evaluation 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 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.4 Power Requirements 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3.5 Inputs and Outputs 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4 Using The TPA311 EVM Stand-ALone 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4.1 TPA311 EVM Connected for BTL Output 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4.2 TPA311 EVM Connected for Single-Ended Output 3-13. . . . . . . . . . . . . . . . . . . . . .

3.5 TPA311 Audio Amplifier Evaluation Module Parts List 3-14. . . . . . . . . . . . . . . . . . . . . . . . . . .

Running Title—Attribute Reference

Figures

1–1 The TI TPA311 Audio Amplifier Evaluation Module 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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 TPA311 EVM 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–3 TPA311 EVM Schematic Diagram 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–4 TPA311 Audio Amplifier IC 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–5 Platform Signal Routing and Outputs 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–6 Mute/Mode and Polarity Control 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–7 Typical Headphone Plug 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–8 TPA311 EVM Connected for Stereo BTL Output 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–9 TPA311 EVM Connected for Stereo Single-Ended Output 3-13. . . . . . . . . . . . . . . . . . . . . . . . .

Tables

2–1 Typical TI Plug-N-Play Platform Jumper and Switch Settings for the TPA311 2-1. . . . . . . . . .

2–2 Platform Jumper and Switch Settings for the TPA311 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–1 TPA311 EVM Parts List 3-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1

Introduction

This chapter provides an overview of the Texas Instruments (TI) TPA311

audio amplifier evaluation module (SLOP116). 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 TPA311 EVM Specifications 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 1

Feature Highlights

1-2 Introduction

1.1 Feature Highlights

TheTITPA311audioamplifierevaluationmoduleandtheTIplug-n-playaudio

amplifier evaluation platform include the following features:

TPA311 Low-Voltage Audio Power Amplifier Evaluation Module

Single channel, bridge-tied load (BTL) or single-ended operation

3.3-V and 5-V operation

350 mW output power into 8 Ωat 5 V, BTL

Ultra-low current consumption in shutdown/mute mode

Internal thermal and short-circuit protection

Module gain adjustable between approximately 2 and 22

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

Evaluation Platform

Evaluation module is designed to simply plug into the platform, auto-

matically 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 and easy audio inputand output connections

Platform Power Options

Onboard 9-V battery

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

TheTPA311 audiopower amplifierevaluationmoduleisacomplete,low-pow-

er single-channel audio power amplifier. It consists of the TI TPA311 350-mW

low-voltage audio power amplifier IC 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 TPA311 Audio Amplifier Evaluation Module

C4 R3

IN+

Shutdown

C5 C3 OUT–

GND

OUT+

GND

GNDVDD

R4 EVM

Literature #

SLOP116

TPA311

SE\BTL*

009227

–3

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

evaluationplatform, or to be wired directlyintoexisting circuitsandequipment

when used stand-alone.

The platform has room for a pair of TPA311 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 auto-

matically provides power to the modules, interconnects them correctly, and

connectsthemtoaversatilearrayofstandardaudioinputandoutputjacksand

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 TPA311 EVM Specifications

Supply voltage range, VDD 2.5 V to 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Supply current, IDD 250 mA, max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous output power, PO:8-ΩBTL, VDD=5 V: 350 mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

32-ΩBTL, VDD=5 V: 75 mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Audio input voltage, VI2 Vpp, max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Minimum load impedance, RL8 Ω. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-4 Introduction

Inhaltsverzeichnis

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