Texas Instruments SLOU121 User manual

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February 2002 Mixed Signal Products
User’s Guide
SLOU121

IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,
enhancements, improvements, and other changes to its products and services at any time and to discontinue
any product or service without notice. Customers should obtain the latest relevant information before placing
ordersandshouldverifythatsuchinformationiscurrentandcomplete.AllproductsaresoldsubjecttoTI’sterms
and conditions of sale supplied at the time of order acknowledgment.
TI warrants performance of its hardware products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI
deems necessary to support this warranty. Except where mandated by government requirements, testing of all
parameters of each product is not necessarily performed.
TI assumes no liability for applications assistance or customer product design. Customers are responsible for
their products and applications using TI components. To minimize the risks associated with customer products
and applications, customers should provide adequate design and operating safeguards.
TIdoesnotwarrantorrepresentthatanylicense, eitherexpress orimplied, isgranted underanyTIpatentright,
copyright,maskworkright,orotherTIintellectualpropertyrightrelatingtoanycombination,machine,orprocess
inwhichTIproductsorservicesareused.InformationpublishedbyTIregardingthird–partyproductsorservices
does not constitute a license from TI to use such products or services or a warranty or endorsement thereof.
Use of such information may require a license from a third party under the patents or other intellectual property
of the third party, or a license from TI under the patents or other intellectual property of TI.
Reproduction of information in TI data books or data sheets is permissible only if reproduction is without
alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction
of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for
such altered documentation.
Resale of TI products or services with statements different from or beyond the parameters stated by TI for that
product or service voids all express and any implied warranties for the associated TI product or service and
is an unfair and deceptive business practice. TI is not responsible or liable for any such statements.
Mailing Address:
Texas Instruments
Post Office Box 655303
Dallas, Texas 75265
Copyright 2002, Texas Instruments Incorporated

EVM IMPORTANT NOTICE
Texas Instruments (TI) provides the enclosed product(s) under the following conditions:
Thisevaluationkit being soldbyTI is intendedforuse for ENGINEERING DEVELOPMENT OR EVALUATION
PURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods being provided
may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective
considerations, including product safety measures typically found in the end product incorporating the goods.
As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic
compatibility and therefore may not meet the technical requirements of the directive.
ShouldthisevaluationkitnotmeetthespecificationsindicatedintheEVMUser’sGuide,thekitmaybereturned
within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE
WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED,
IMPLIED,ORSTATUTORY,INCLUDINGANYWARRANTY OF MERCHANTABILITY ORFITNESSFORANY
PARTICULAR PURPOSE.
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user
indemnifies TI from all claims arising from the handling or use of the goods. Please be aware that the products
receivedmaynotberegulatorycompliant oragency certified (FCC,UL, CE,etc.). Dueto theopen construction
oftheproduct,itistheuser’sresponsibilitytotakeanyandallappropriateprecautionswithregardtoelectrostatic
discharge.
EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE
TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
TI currently deals with a variety of customers for products, and therefore our arrangement with the user is not
exclusive.
TI assumes no liability for applications assistance, customer product design, software performance, or
infringement of patents or services described herein.
Please read the EVM User’s Guide and, specifically, the EVM Warnings and Restrictions notice in the EVM
User’sGuidepriortohandlingtheproduct.Thisnoticecontainsimportantsafetyinformationabouttemperatures
and voltages. For further safety concerns, please contact the TI application engineer.
Persons handling the product must have electronics training and observe good laboratory practice standards.
No license is granted under any patent right or other intellectual property right of TI covering or relating to any
machine, process, or combination in which such TI products or services might be or are used.
Mailing Address:
Texas Instruments
Post Office Box 655303
Dallas, Texas 75265
Copyright 2002, Texas Instruments Incorporated

EVM WARNINGS AND RESTRICTIONS
It is important to operate this EVM within the specified input and output ranges described in
the EVM User’s Guide.
Exceeding the specified input range may cause unexpected operation and/or irreversible
damage to the EVM. If there are questions concerning the input range, please contact a TI
field representative prior to connecting the input power.
Applyingloadsoutsideofthespecifiedoutputrangemayresultinunintendedoperationand/or
possible permanent damage to the EVM. Please consult the EVM User’s Guide prior to
connecting any load to the EVM output. If there is uncertainty as to the load specification,
please contact a TI field representative.
Duringnormaloperation,somecircuitcomponentsmayhavecasetemperaturesgreaterthan
60°C.TheEVM isdesignedto operateproperlywith certaincomponentsabove 60°C aslong
astheinputandoutput rangesare maintained.Thesecomponentsincludebut arenot limited
tolinearregulators,switchingtransistors,passtransistors,andcurrentsenseresistors.These
typesof devicescanbeidentifiedusingtheEVM schematiclocated intheEVMUser’sGuide.
When placing measurement probes near these devices during operation, please be aware
that these devices may be very warm to the touch.
Mailing Address:
Texas Instruments
Post Office Box 655303
Dallas, Texas 75265
Copyright 2002, Texas Instruments Incorporated

Information About Cautions and Warnings
v
Preface
Read This First
How to Use This Manual
This document contains the following chapters:
-Chapter 1—Introduction
-Chapter 2—Quick Start
-Chapter 3—Details
-Chapter 4—Reference
Information About Cautions and Warnings
This book may contain cautions and warnings.
This is an example of a caution statement.
A caution statement describes a situation that could potentially
damage your software or equipment.
This is an example of a warning statement.
A warning statement describes a situation that could potentially
cause harm to you.
The information in a caution or a warning is provided for your protection.
Please read each caution and warning carefully.

Related Documentation From Texas Instruments
vi
Related Documentation From Texas Instruments
-TIPlug-N-PlayAudio AmplifierEvaluationPlatform (literaturenumber
SLOU011) provides detailed information on the evaluation platform and
its use with TI audio evaluation modules
-TPA6011A4 Stereo 2-W Audio Power Amplifier (literature number
SLOS392) This is the data sheet for the TPA6011A4 audio amplifier inte-
grated 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
Jofpart15ofFCCrules,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.

Contents
vii
Contents
1 Introduction 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Feature Highlights 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Description 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 TPA6011A4 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 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Details 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Precautions 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 The TPA6011A4 Audio Power Amplifier Evaluation Module 3-3. . . . . . . . . . . . . . . . . . . . . . .
3.2.1 TPA6011A4 Audio Amplifier IC 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.2 Inputs and Gain 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.3 Volume Control 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.4 Differential Input 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.5 Depop Circuitry 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.6 BTL Operation 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.7 Single-Ended Operation 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Using the TPA6011A4 EVM With the Plug-N-Play Evaluation Platform 3-10. . . . . . . . . . . .
3.3.1 Installing and Removing EVM Boards 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.2 TPA6011A4 Module Jumper Settings and Switches 3-10. . . . . . . . . . . . . . . . . . . . .
3.3.3 Signal Routing 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.4 Mute (Shutdown)/Mode 3-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.5 Power Requirements 3-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.6 Inputs and Outputs 3-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Using the TPA6011A4 EVM Stand-Alone 3-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.1 TPA6011A4 EVM Connected for BTL Output 3-17. . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.2 TPA6011A4 EVM Connected for Single-Ended Output 3-18. . . . . . . . . . . . . . . . . . .
4 Reference 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1 TPA6011A4 EVM Layers and Board Schematic 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 TPA6011A4 EVM Parts List 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents
viii
Figures
1–1 The TI TPA6011A4 Audio Amplifier Evaluation Module 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–1 Quick Start Platform Map 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–2 Module Preparation 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–3 Quick Start Module Map 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–1 The TI Plug-N-Play Audio Amplifier Evaluation Platform 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–2 TPA6011A4 EVM 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–3 TPA6011A4 EVM Schematic Diagram 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–4 TPA6011A4 Amplifier IC 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–5 Block Diagram of SE Volume Control 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–6 TPA6011A4 EVM Jumpers and Switches 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–7 Platform Signal Routing and Outputs 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–8 Mute/Mode and Polarity Control 3-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–9 Typical Headphone Plug 3-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–10 TPA6011A4 EVM Connected for Stereo BTL Output 3-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–11 TPA6011A4 EVM Connected for Stereo Single-Ended Output 3-18. . . . . . . . . . . . . . . . . . . . . .
4–1 TPA06011A4 EVM Top View 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4–2 TPA06011A4 EVM Bottom View 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4–3 TPA06011A4 EVM Schematic Diagram 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tables
2–1 Typical TI Plug-N-Play Platform Jumper and Switch Settings for the TPA6011A4 2-1. . . . . .
2–2 Typical TPA6011A4 EVM Jumper Settings 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–3 Platform Jumper and Switch Settings for the TPA6011A4 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . .
2–4 Typical TPA6011A4 EVM Jumper Settings 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–1 DC Volume Control (BTL Mode, VDD = 5 V) 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–2 DC Volume Control (SE Mode, VDD = 5 V) 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–3 Typical TPA6011A4 EVM Jumper Settings for BTL Stand-Alone 3-17. . . . . . . . . . . . . . . . . . . .
3–4 Typical TPA6011A4 EVM Jumper Settings for Single-Ended Stand-Alone 3-18. . . . . . . . . . . .
4–1 TPA6011A4 EVM Parts List 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1
Introduction
This chapter provides an overview of the Texas Instruments (TI) TPA6011A4
audio amplifier evaluation module (SLOP389). It includes a list of EVM
features, a brief illustrated description of the module, and a list of EVM
specifications.
Topic Page
1.1 Feature Highlights 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Description 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 TPA6011A4 EVM Specifications 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 1

Feature Highlights
1-2 Introduction
1.1 Feature Highlights
The TI TPA6011A4 audio amplifier evaluation module and the TI plug-n-play
audio amplifier evaluation platform include the following features:
-TPA6011A4 stereo 2-W audio power amplifier evaluation module
JInternal depop circuitry to minimize transients in outputs
JDual channel, bridge-tied load (BTL) or single-ended (SE) operation
J2 W per channel output power into 3 Ωat 5 V, BTL
JLow current consumption in shutdown mode (20 µA)
JInternal input MUX selects among two sets of stereo inputs
JDC voltage volume control from 20 dB to –40 dB, and –85 dB mute
(BTL Mode)
JSE dc voltage volume control proportional to BTL gain setting
JMaximum SE volume control setting via SEMAX terminal
JDifferential stereo inputs
JAfademodeslowlyrampsupordownthevolumewhencomingoutof
or going into shutdown.
-Quick and easy configuration with the TI plug-n-play audio 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
JPlatformprovides quick andeasyaudioinput and output connections
-Platform power options
JExternal 5-V –15-V DC VCC supply inputs
JExternal regulated VDD supply input
JSocket for onboard 5-V/3.3-V VDD voltage regulator EVM
JOnboard overvoltage 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

Description
1-3
Introduction
1.2 Description
The TPA6011A4 stereo 2-W audio power amplifier evaluation module is a
complete, 2-W per channel stereo audio power amplifier with dc volume
control. It consists of the TI TPA6011A4 stereo 2-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 (see Figure 1–1).
Figure 1–1.The TI TPA6011A4 Audio Amplifier Evaluation Module
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,ortobewireddirectlyintoexistingcircuitsandequipment
when used stand-alone.
The platform has room for a single TPA6011A4 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 TPA6011A4 EVM Specifications
Supply voltage range, VDD 4.5 V to 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supply current, IDD 2 A max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous output power per channel, PO: 3-ΩBTL, VDD=5 V 2 W. . . . . . .
Audio input voltage, VI: HP input 5 Vpp max. . . . . . . . . . . . . . . . . . . . . . . . . .
Line input 5 Vpp max. . . . . . . . . . . . . . . . . . . . . . . .
Minimum load impedance, RL3 Ω. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-4 Introduction

2-1
Quick Start
Quick Start
The steps in this chapter can be followed to quickly prepare the TPA6011A4
audio amplifier EVM for use. Using the TPA6011A4 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 can be
wired directly into existing circuits or equipment.
The platformswitch and jumpersettingsshown in Table 2–1 are typical for the
TPA6011A4EVMandwillcausetheTPA6011A4toswitchtosingle-endedout-
put mode when a plug is inserted into platform headphone jack J10.
Table 2–1. Typical TI Plug-N-Play Platform Jumper and Switch Settings for the
TPA6011A4
EVM JP6 JP7 JP8 S2 S3
P-N-P Platform Mode X Hi Note 2 U2–U4
Notes: 1) X = Don’t care
2) SetS2 to ONwhensignalconditioning board isinstalledinU1; set S2
to OFF when no signal conditioning board is installed.
Table 2–2. Typical TPA6011A4 EVM Jumper Settings
EVM J1 J2 J3 J4
TPA6011A4 OFF OFF ON OFF
Note: ON = Shunt installed
OFF = Open
Topic 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 2

Precautions
2-2 Quick Start
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.Quick Start Platform Map
Signal Conditioning
****CAUTION****
Do not insert or remove
EVM boards with power
applied
ICC
JP4
F1
VR1
R1
JP3
JP2 JP1 AC/DC
(J2)
VCC(J1)
D1 D2 D3
D4 J2
J3 J4 J5
AC/DC
In
VCC
In
+
J1
DC
SOURCE
LED1 VCC
LED2 VDD
R2
JP5 IDD
B1
U6
POWER
SUPPLY
U3 U4
U5
U1
U2
Audio
Power
Amps
OnOff Conditioning
S2
J7 J8 Right
Out Left
Out
+–+–
JP6
Mode
Mute
Spk(U2-U4)
JP8
J9 Left
Out
JP7
S3 HP Source
U2-U4
U5
Polarity
Lo
Hi
HP(U5)
C3 C2
++
R3
R5
J10
Stereo
HP Out
TP1
GND
Plug-N-PlayAudio Amplifier
Evaluation Platform
SLOP097 Rev. C.1
Stereo
In
Right
In Left
In
J6 In/Out VDD
F2
VR2 +
DC
Power
In/Out
Speaker
Output
Headphone
Output
Audio
Input
Power
Input
Batt
C1+
Right
Out
On Off Pwr
S1
TEXAS INSTRUMENTS 1997
R4
7a
1
23 4
5
6
7b
7b
7b 7b
910
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Quick Start List for Platform
2-3
Quick Start
2.2 Quick Start List for Platform
Follow these steps when using the TPA6011A4 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 Figure 2–2, and details appear in Chapter 3.
-Platform Preparations
1) EnsurethatallexternalpowersourcesaresettoOFFandthattheplatform
power switch S1 is set to OFF.
2) InstallaTPA6011A4moduleinplatformsocketU2,takingcaretoalignthe
module pins correctly.
3) Use switch S2 to select or bypass the signal conditioning EVM (U1).
4) Set control signal polarity jumper JP8 to Hi.
5) Set jumper JP6 to select the Mode control input (causes the TPA6011A4
toswitchtothesingle-endedoutputmodeifaplugisinsertedintoplatform
headphone jack J10).
6) If the headphone jack (J10) output will be used, set headphone source
switch S3 to U2–U4.
Table 2–3. Platform Jumper and Switch Settings for the TPA6011A4
EVM JP6 JP7 JP8 S2 S3
P-N-P Platform Mode X Hi Note 2 U2–U4
Notes: 1) X = Don’t care
2) SetS2 to ONwhensignalconditioning board isinstalledinU1; set S2
to OFF when no signal conditioning board is installed.
-Power Supply
7) Selectandconnectthepowersupply(ensurepowersupplyissettoOFF):
a) Connectanexternalregulatedpowersupplysetto5VtoplatformVDD
power input connector J6 taking care to observe marked polarity,
or
b) InstallavoltageregulatorEVM(SLVP097orequiv.)inplatformsocket
U6.Connecta7V–12 VpowersourcetoaplatformVCC powerinput
J1 or J2 and jumper the appropriate power input (see platform user’s
guide).
-Inputs and Outputs
8) Ensure that the audio signal source level is set to minimum.
9) Connect the audio source to left and right RCA phono jacks J3 and J5 or
stereo miniature phone jack J4.
10) Connectspeakerstoleft and right RCA jacks J7 andJ9ortostrippedwire
speaker connectors J8.
-Evaluation Module Preparations

Quick Start List for Platform
2-4 Quick Start
Figure 2–2.Module Preparation
13 11
12
16
17
18
19
14
Table 2–4. Typical TPA6011A4 EVM Jumper Settings
EVM J1 J2 J3 J4
TPA6011A4 OFF OFF ON OFF
Note: ON = Shunt installed, OFF = Open
11) To allow the module SE/BTL control input to switch the amplifier IC
between single ended (SE) and bridge-tied load (BTL) output modes, set
output mode jumper J1 to OFF. To keep the module amplifier IC in the
single-endedoutputmoderegardlessofthecontrolinputstate,setjumper
J1 to ON.
12) To allow the module HP/LINE control input to switch the amplifier IC
between using the HP pins and the LINE pins as the signal inputs, set the
input mode jumper J2 to OFF. To keep the amplifier IC in the HP input
mode regardless of the control input state, set jumper J2 to ON.
13) To allow the amplifier IC to switch from the LINE inputs to the HP inputs
when the output switches from BTL output mode to SE output mode and
vice versa, set jumper J3 to ON. To allow the inputs and output modes to
switch independently, set jumper J3 to OFF. Jumper J3 ties the HP/LINE
and SE/BTL pins together on the EVM.
14) ToplacetheamplifierinFADEmode,installjumperJ4.FADEmodeslowly
rampsupordownthegainoftheamplifierwhenleavingorenteringSHUT-
DOWN mode.
-Power Up
PlatformLED2shouldlightindicatingthepresenceofVDD,andtheevaluation
modules installed on the platform should begin operation.
15) Adjust the signal source level as needed.
16) AdjusttheBTL(speaker)volumeasneededbyturningtheR5potentiome-
ter in the clockwise direction to increase the volume. Turn in the counter
clockwisedirectiontodecrease the volume. The VOLpinontherightside
of the EVM is provided to monitor the dc voltage. See Table 3–1 for gain
settings.

Quick Start List for Stand-Alone
2-5
Quick Start
17) Adjust the SE (headphone) volume by adjusting potentiometer R6. Turn-
ingR6intheclockwisedirectiondecreasesthevoltageontheSEDIFFter-
minal and the SE gain increases. Turning R6 in the counter clockwise di-
rection increases the SEDIFF voltage and decreases the SE volume.
18) Set the maximum possible SE gain by adjusting R7. Turning R7 in the
clockwise direction sets the limit higher; turning R7 in the counter clock-
wise direction lowers the SE gain limit.
19) Press and hold switch S1 down to place the amplifier in the SHUTDOWN
state. Release for normal operation.
2.3 Quick Start List for Stand-Alone
Follow these steps to use the TPA6011A4 EVM stand-alone or when
connecting it into existing circuits or equipment. Connections to the
TPA6011A4 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. Numbered callouts for selected steps are shown in
Figure 2–3, and details appear in Chapter 3.
Figure 2–3.Quick Start Module Map
86
7
11
12
13
-Power Supply
1) Ensure that all external power sources are set to OFF.
2) Connectanexternalregulatedpower supplysetto5Vto themoduleVDD
and GND pins taking care to observe marked polarity.
-Inputs and Outputs
3) Ensure that audio signal source level adjustments are set to minimum.
4) Connect the right (left) positive lead of the audio source to the module
R LINE–(L LINE–) pins and the negative lead to the R IN+ (L IN+) pins.
If using the headphone inputs, connect the positive audio source to the
module R HP (L HP) and the negative lead to R IN+ (L IN+). The inputs

Quick Start List for Stand-Alone
2-6 Quick Start
can be used with a differential or single-ended audio source, but the
headphone and line have common positive inputs.
5) Select output mode:
a) For BTL output, connect a speaker to the module OUT+ and OUT–
pins of each channel,
or
b) For single-ended output, connect a headphone or a speaker to the
module OUT+ and GND pins of each channel through a 33-µF to
1000-µF output-coupling capacitor (see Figure 3–10).
-Evaluation Module Preparations
6) To allow the module SE/BTL control input to switch the amplifier IC
between single ended (SE) and bridge-tied load (BTL) output modes, set
output mode jumper J1 to OFF. To keep the module amplifier IC in the
single-endedoutputmoderegardlessofthecontrolinputstate,setjumper
J1 to ON.
7) To allow the module HP/LINE control input to switch the amplifier IC
between using the HP pins and the LINE pins as the signal inputs, set the
input mode jumper J2 to OFF. To keep the amplifier IC in the HP input
mode regardless of the control input state, set jumper J2 to ON.
-Control Inputs
8) To allow the amplifier IC to switch from the LINE inputs to the HP inputs
when the output switches from BTL output mode to SE output mode and
vice versa, set jumper J3 to ON. To allow the inputs and output modes to
switch independently, set jumper J3 to OFF. Connect control lines to the
various module control input pins as needed:
a) SE/BTL: A high selects the single-ended (SE) output mode; a low or
float selects the bridge-tied load (BTL) output mode.
b) HP/LINE:A high selects headphone inputs (pins 4 and 10); a low or
float selects line inputs (pins 5 and 9).
c) SHUTDOWN:AlowshutsdowntheamplifierIConthemodule;ahigh
or float allows normal operation.
d) FADE:A low places the amplifier in FADE mode which slowly
increases/decreases the gain when leaving/entering the
SHUTDOWN state; a high or float allows a quick ramp of gain when
entering/leaving SHUTDOWN.
-Power-Up
9) Verify correct voltageandinputpolarity and set theexternalpowersupply
to ON.
The EVM should begin operation.
10) Adjust the signal source level as needed.
11) AdjusttheBTL(speaker)volumeasneeded by turning the RS potentiom-
eterintheclockwisedirectiontoincreasesthevolume.Turninthecounter
clockwisedirectiontodecrease the volume. The VOLpinontherightside

Quick Start List for Stand-Alone
2-7
Quick Start
of the EVM is provided to monitor the dc voltage. See Table 3–1 for gain
settings.
12) Adjust the SE (headphone) volume by adjusting potentiometer R6.
Turning R6 in the clockwise direction decreases the voltage on the
SEDIFF terminal and the SE gain increases. Turning R6 in the counter
clockwise direction increases the SEDIFF voltage and decreases the SE
volume.
13) Set the maximum possible SE gain by adjusting R7. Turning R7 in the
clockwise direction sets the limit higher; turning R7 in the counter
clockwise direction lowers the SE gain limit.

2-8 Quick Start