Texas Instruments SLOU082 User Manual
TPA032D03 Mono ClassĆD
Audio Power Amplifier
With Stereo Headphone Amplifier
Evaluation Module
User’s Guide
September 2000 Mixed-Signal Products
SLOU082
IMPORTANT NOTICE
T exas 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 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
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.
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.
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 2000, 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 A032D03 CLASS-D AUDIO POWER AMPLIFIER
Number SLOS283) This is the data sheet for the TPA032D03
audio amplifier integrated circuit.
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Design Considerations for Class-D Audio Power Amplifiers
(TI Literature Number SLOA031) This application report provides
detailed information on designing audio power amplifier systems
using TI class-D amplifier ICs
J
Reducing and Eliminating the Class-D Output Filter
(TI Literature Number SLOA023) This application report covers
output filter theory and design for class-D audio power amplifiers.
Preface
(TI Literature
(TI Literature
,
,
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
PowerPAD is a trademark of Texas Instruments.
Chapter Title—Attribute Reference
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iv
Running Title—Attribute Reference
Contents
1 Introduction 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Feature Highlights 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Description 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 TPA032D03 Class-D EVM Specifications 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3.1 Maximum 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3.2 Typical 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 Plug-N-Play Platform Power Requirements and Connections 3-3. . . . . . . . . . . . . . . . . . . . .
3.3 Plug-N-Play Platform Inputs and Outputs 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.1 Inputs 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.2 Outputs 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Control and Indicator Circuits 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5 TPA032D03 Class-D EVM Test Points 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6 Module Switches 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6.1 S1 — Shutdown 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6.2 S2 — Mute Switch 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.7 Using The TPA032D03 Class-D EVM Stand-Alone 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.7.1 Power Connections 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.7.2 Input Connections 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.7.3 Output Connections 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.7.4 Controls and Indicators 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.8 TPA032D03 Class-D EVM Bill of Materials 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.9 TPA032D03 Class-D EVM Schematic 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.10 TPA032D03 Class-D EVM PCB Layers 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter Title—Attribute Reference
v
Running Title—Attribute Reference
Figures
1–1 The TI TPA032D03 Mono Class-D Audio Power Amplifier EVM — Top View 1-3. . . . . . . . . .
1–2 The TI TPA032D03 Mono Class-D Audio Power Amplifier EVM — Bottom View 1-3. . . . . . .
2–1 Quick Start Platform Map 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–1 The TI Plug-N-Play Audio Amplifier Evaluation Platform 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–2 Typical Headphone Plug 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–3 TPA032D03 Class-D EVM Stand-Alone Connections for Mono BTL Output 3-7. . . . . . . . . . .
3–4 TPA032D03 Class-D EVM Schematic Diagram. 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–5 TPA032D03 Class-D EVM Top Assembly. 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–6 TPA032D03 Class-D EVM Bottom Assembly 3-1 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–7 TPA032D03 Class-D EVM Top Layer 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–8 TPA032D03 Class-D EVM Second Layer . 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–9 TPA032D03 Class-D EVM Third Layer. 3-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–10 TPA032D03 Class-D EVM Bottom Layer . 3-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
T ables
2–1 Typical TI Plug-N-Play Platform Jumper and Switch Settings for the
2–2 Platform Jumper and Switch Settings for the TPA032D03 2-3. . . . . . . . . . . . . . . . . . . . . . . . . .
3–1 Platform Jumper and Switch Settings for the TPA032D03 EVM Power Inputs 3-3. . . . . . . . .
3–2 TPA032D03 Class-D EVM Fault Indicator Table 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–3 TPA032D03 Class-D EVM Test Points 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–4 TPA032D03 Class-D EVM Bill of Materials 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TPA032D03 Class-D EVM 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
vi
Chapter 1
Introduction
This chapter provides an overview of the Texas Instruments (TI) TPA032D03
mono class-D audio power amplifier evaluation module (SLOP310). 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 TP A032D03 Class-D EVM Specifications 1–4. . . . . . . . . . . . . . . . . . . . . . . .
Introduction
1-1
Feature Highlights
1.1 Feature Highlights
The TI TPA032D03 mono class-D audio power amplifier evaluation module
and the TI plug-n-play audio amplifier evaluation platform include the following
features:
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TPA032D03 Mono Class-D Audio Power Amplifier with Stereo Headphone Amplifier Evaluation Module
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Internal depop circuitry to greatly reduce turn-on transients in outputs
Single channel, class D bridge-tied load (BTL) only operation
12 V operation
10 W BTL output into 4 Ω at 12 V
Low current consumption in shutdown/mute mode (20 µA/10 mA) ??
Internal gain set to 25 dB
IC shutdown, mute, and mode control inputs — TTL logic level
High efficiency
Class AB stereo headphone driver — capable of 50 mW into 32 Ω
Onboard stereo headphone output jack
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CE tested and approved.
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Quick and Easy Configuration With the TI Plug-N-Play Audio Amplifier
Evaluation Platform
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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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External 5-V – 15-V 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
1-2
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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
1.2 Description
The TP A032D03 mono class-D audio power amplifier evaluation module is a
complete, 10-W mono audio power amplifier. It consists of the TI TPA032D03
mono class-D audio power amplifier IC along with a small number of other
parts mounted on a circuit board that measures approximately 2¼ inches by
1¾ inches (Figure 1–1 and 1–2).
Figure 1–1.The TI TPA032D03 Mono Class-D Audio Power Amplifier EVM —
C19 C20
SLOP310 TPA032D03 EVM Board
GND
VCC
Description
Top View
RHP
GND –IN+ GND
R1
Mode LHP
R3
J1
R12
C1
R4
R5
C3
C4
R2
C2
C5
SD
S1
Mute
S2
R6
R11
TP3
TP2
C12
+
R14
C11
R13
TP1
VDD
U1
C17
C16
C18
R9R8R7
R10
GND
L1
VCC
2000
Instruments
Texas
Mute
SD
OUT–
L2
OUT+
Note: Capacitor C1 1 is optional (not assembled) and a location for it on the EVM PCB has been provided to increase design
flexibility and allow decoupling capacitance to be added.
Figure 1–2.The TI TPA032D03 Mono Class-D Audio Power Amplifier EVM —
C22
C23
Bottom View
C7
C6
C9
C8
C10
C13
C14
C15
C21
Introduction
1-3
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