Texas Instruments TPA2001D2 Manuale utente

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November 2000 Mixed-Signal Products

User’s Guide

SLOU093

IMPORTANT NOTICE

TexasInstruments andits subsidiaries(TI) reservethe rightto makechanges totheir productsor todiscontinue

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

TIdeemsnecessarytosupport thiswarranty. Specifictestingofallparameters ofeachdevice isnotnecessarily

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.

TIassumes noliabilityforapplicationsassistance orcustomer productdesign. TIdoes notwarrantorrepresent

thatanylicense,eitherexpressorimplied,isgrantedunderanypatentright,copyright,maskworkright,orother

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.

Running Title—Attribute Reference

iii

Chapter Title—Attribute Reference

Preface

Read This First

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.



TPA2001D2 1-W STEREO CLASS-D AUDIO POWER

AMPLIFIER

(literature number SLOS292) This is the data sheet

for the TPA2001D2 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

testedforcompliancewiththelimitsofcomputingdevicespursuanttosubpart

Jofpart 15ofFCCrules,which aredesignedtoprovidereasonableprotection

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.

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 TPA2001D2 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. . . . . . . . . . . . . . . . . . . . . . . .

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

Tables

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

1-1

Introduction

This chapter provides an overview of the Texas Instruments (TI) TPA2001D2

filterless class-D audio amplifier evaluation module (SLOP315). It includes a

listofEVM features,abriefdescriptionof themoduleillustratedwithapictorial

diagram, and a list of EVM specifications.

Topic Page

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

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

1.3 TPA2001D2 EVM Specifications 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 1

Feature Highlights

1-2

Introduction

1.1 Feature Highlights

The TI TPA2001D2 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 Ωat 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

Platformprovides quick andeasyaudioinput and outputconnections

Platform Power Options

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

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

ROUT+

ROUT–

SHUTDOWN

GND

LOUT–

LOUT+

C12

VDD GND

LIN–

GND

LIN+

VDD GND

RIN+

GND

RIN–

TPA2001D2 EVM

SLOP315 U1

2000

SHUTDOWN

GAIN0

GAIN1

C11

C10

C15

C16

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

C17

C18

C19

C20

C21

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

evaluationplatform,ortobewired directlyintoexistingcircuitsandequipment

when used stand-alone.

TPA2001D2 EVM Specifications

1-4

Introduction

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,

andconnectsthemtoaversatilearrayofstandardaudioinputandoutputjacks

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 TPA2001D2 EVM Specifications

Supply voltage range, VDD 4.5 V to 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Supply current, IDD 1 A max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous output power per channel, PO: 8 Ω, VDD = 5 V 1 W. . . . . . . . . . . . . . . . . . . . . . . . . . .

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

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