TPA032D04 ClassĆD Stereo
Audio Power Amplifier
Evaluation Module
User’s Guide
September 2000 Mixed-Signal Products
SLOU068A
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 A032D04 CLASS-D STEREO AUDIO POWER AMPLIFIER
(TI Literature Number SLOS203) This is the data sheet for the
TPA032D04 audio amplifier integrated circuit.
J
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
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.
PowerPAD is a trademark of Texas Instruments.
Chapter Title—Attribute Reference
iii
iv
Running Title—Attribute Reference
Contents
1 Introduction 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Feature Highlights 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Description 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 TPA032D04 Class-D EVM Specifications 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3.1 Maximum 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3.2 Typical 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 TPA032D04 Class-D Audio Power Amplifier Evaluation Module 3-3. . . . . . . . . . . . . . .
3.2.1 TPA032D04 Class-D Stereo Audio Amplifier IC 3-5. . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.2 Overview of Class-D Audio Amplifiers 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.3 Bridge-Tied Load (BTL) Operation 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.4 Class-D Differential and Headphone Single-Ended Inputs 3-8. . . . . . . . . . . . . . . . .
3.2.5 Control and Indicator Circuits 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.6 TPA032D04 Class-D EVM Test Points 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Class-D Amplifier Design Considerations 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Using the TPA032D04 Class-D EVM With the Plug-N-Play Platform 3-11. . . . . . . . . . . . . .
3.4.1 Installing and Removing EVM Boards 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.2 Module Switches 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.3 Signal Routing 3-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.4 Shutdown 3-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.5 Power Requirements 3-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.6 Inputs and Outputs 3-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5 Using the TPA032D04 Class-D EVM Stand-Alone 3-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.1 Power Connections 3-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.2 Input Connections 3-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.3 Output Connections 3-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.4 Controls and Indicators 3-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6 TPA032D04 Class-D EVM Performance Characteristics 3-20. . . . . . . . . . . . . . . . . . . . . . . .
3.7 TPA032D04 Class-D EVM Power Supply Decoupling Data 3-27. . . . . . . . . . . . . . . . . . . . . .
3.8 TPA032D04 Class-D EVM Interconnects 3-28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.9 TPA032D04 Class-D EVM Bill of Materials 3-29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.10 TPA032D04 Class-D EVM Schematic 3-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.11 TPA032D04 Class-D EVM PCB Layers 3-31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter Title—Attribute Reference
v
Running Title—Attribute Reference
Figures
1–1 The TI TPA032D04 Class-D Stereo Audio Power Amplifier EVM—Top View 1-3. . . . . . . . . .
1–2 The TI TPA032D04 Class-D Stereo Audio Power Amplifier EVM—Bottom View 1-4. . . . . . .
2–1 Quick Start Platform Map 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–1 The TI Plug-N-Play Audio Amplifier Evaluation Platform 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–2 The TI TPA032D04 Class-D Stereo Audio Power Amplifier EVM—Top View 3-4. . . . . . . . . .
3–3 The TI TPA032D04 Class-D Stereo Audio Power Amplifier EVM—Bottom View 3-4. . . . . . .
3–4 TPA032D04 Class-D EVM Schematic Diagram 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–5 Class-D Functional Diagram 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–6 Class-D Input and Output Waveforms 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–7 Platform Signal Routing and Outputs 3-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–8 Mute/Mode and Polarity Control 3-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–9 Typical Headphone Plug 3-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–10 TPA032D04 Class-D EVM Stand-Alone Connections for Stereo BTL Output 3-18. . . . . . . . .
3–11 Class-D Amplifier Frequency Response at 4 Ω 3-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–12 Class-D Amplifier Distortion versus Output Power at 4 Ω 3-21. . . . . . . . . . . . . . . . . . . . . . . . . .
3–13 Class-D Amplifier Distortion versus Output Power at 8 Ω 3-21. . . . . . . . . . . . . . . . . . . . . . . . . .
3–14 Class-D Amplifier Distortion versus Frequency at 1 W Into 4 Ω. 3-22. . . . . . . . . . . . . . . . . . . .
3–15 Class-D Amplifier Distortion versus Frequency at 1 W Into 8 Ω. 3-22. . . . . . . . . . . . . . . . . . . .
3–16 Class-D Amplifier Crosstalk versus Frequency Into 4 Ω. 3-23. . . . . . . . . . . . . . . . . . . . . . . . . . .
3–17 Class-D Amplifier Crosstalk versus Frequency Into 8 Ω. 3-23. . . . . . . . . . . . . . . . . . . . . . . . . . .
3–18 Class AB Headphone Amplifier Frequency Response. 3-24. . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–19 Class AB Headphone Amplifier Distortion versus Output Power. 3-25. . . . . . . . . . . . . . . . . . . .
3–20 Class AB Headphone Amplifier Distortion versus Frequency. 3-25. . . . . . . . . . . . . . . . . . . . . .
3–21 Class AB Headphone Amplifier Crosstalk versus Frequency 3-26. . . . . . . . . . . . . . . . . . . . . . .
3–22 Power Supply Decoupling 3-27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–23 TPA032D04 Class-D EVM Schematic Diagram 3-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–24 TPA032D04 Class-D EVM Top Assembly 3-31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–25 TPA032D04 Class-D EVM Bottom Assembly 3-31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–26 TPA032D04 Class-D EVM Top Layer 3-32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–27 TPA032D04 Class-D EVM Second Layer . 3-32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–28 TPA032D04 Class-D EVM Third Layer. 3-33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–29 TPA032D04 Class-D EVM Bottom Layer . 3-33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 TPA032D04 2-3. . . . . . . . . . . . . . . . . . . . . . . . . .
3–1 TPA032D04 Class-D EVM Fault Indicator Table 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–2 TPA032D04 Class-D EVM Test Points 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–3 Platform Jumper and Switch Settings for the TPA032D04 EVM Power Inputs 3-16. . . . . . . .
3–4 TPA032D04 Class-D EVM/Plug-N-Play Platform Interconnects 3-28. . . . . . . . . . . . . . . . . . . . .
3–5 TPA032D04 Class-D EVM Bill of Materials 3-29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
vi
TPA032D04 Class-D EVM 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 1
Introduction
This chapter provides an overview of the T exas Instruments (TI) TP A032D04
class-D stereo audio power amplifier evaluation module (SLOP131). 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 TPA032D04 Class-D EVM Specifications 1–5. . . . . . . . . . . . . . . . . . . . . . . .
Introduction
1-1
Feature Highlights
1.1 Feature Highlights
The TI TPA032D04 class-D stereo audio power amplifier evaluation module
and the TI plug-n-play audio amplifier evaluation platform include the following
features:
-
TPA032D04 Class-D Stereo Audio Power Amplifier Evaluation Module
J
J
J
J
J
J
J
J
J
Internal depop circuitry to significantly reduce turn-on transients in
outputs
Dual channel, 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 (147 µA/2.5 mA)
Internal class-D 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
J
CE tested and approved
-
Quick and Easy Configuration With the TI Plug-N-Play Audio Amplifier
Evaluation Platform
J
Evaluation module is designed to simply plug into the platform,
automatically making all signal, control, and power connections
J
Platform provides flexible power options
J
Jumpers on the platform select power and module control options
J
Switches on the platform route signals
J
Platform provides quick and easy audio input and output connections
-
Platform Power Options
J
External 5-V – 15-V VCC supply inputs
J
External regulated VDD supply input
J
Socket for onboard 5 V/3.3 V VDD voltage regulator EVM
J
Onboard overvoltage and reverse polarity power protection
-
Platform Audio Input and Output Connections
J
J
J
J
J
1-2
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
Introduction
1.2 Description
Description
The TP A032D04 class-D stereo audio power amplifier evaluation module is a
complete, 10-W per channel stereo audio power amplifier. It consists of the TI
TPA032D04 class-D stereo 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 2
1/4
inches (Figure 1–1 and 1–2).
Figure 1–1.The TI TPA032D04 Class-D Stereo Audio Power Amplifier EVM—
SD
S2
Mute
–LIN+GND
C4
Lout–
C5
R2
L4
L2
C16
C3
+
R6
R5
R3
L3
VCC
L1
GND
C15
Rev. B
+
SLOP204 TPA032D04 EVM Board
R14
R13
TP2
R12
R11
J1
Rout+
TP4
TP5
RHPGND LHP
Rout–
C24
R8 R9
R7
C22 C23
C6
C7
R4
C2
+RIN– Mode
Mute
Texas
Instruments
1999
C25
C21
U1
C1
R1
R10
SD
TP1
C17
S1
Top View
Lout+
VCC
GND
VDD
Note: Capacitors C15 and C16 are optional (not assembled) and locations for them on the EVM PCB have been provided to
increase design flexibility and allow decoupling capacitance to be added (Section 3.7
Power Supply Decoupling
Introduction
).
1-3
Description
Figure 1–2.The TI TPA032D04 Class-D Stereo Audio Power Amplifier EVM—
C27
C30
C14
C26
C13
C8
C29
C20
C18
C12
C10
C9
C31
C28
C19
C11
Bottom View
Single in-line header pins extend from the underside of the module circuit
board to allow the EVM to either be plugged into the TI plug-n-play audio
amplifier evaluation platform, or to be wired directly into existing circuits and
equipment when used stand-alone.
The platform has room for a single TP A032D04 class-D evaluation module and
is a convenient vehicle for demonstrating TI’s audio power amplifier and
related evaluation modules. The EVM simply plugs 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-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.
1-4
Introduction
1.3 TPA032D04 Class-D EVM Specifications
All measurements made with VDD = 5 V and RL = 4 Ω, unless otherwise noted.
1.3.1 Maximum
TPA032D04 Class-D EVM Specifications
Supply voltage range, V
Supply current, I
DD
Continuous output power per channel, BTL, P
DD
10 W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
O
Continuous output power per channel, headphones, PO: 32-Ω SE 50 mW. . . . . . . . . . . . . . . . . .
Audio input voltage, class-D, V
Audio input voltage, headphone, V
I
I
1.3.2 Typical
Supply current, no input, class-D active, I
Supply current, no input, headphone active, I
Supply current, EVM mute, class-D active, I
Supply current, EVM mute, headphone active, I
Supply current, EVM shutdown, I
Gain, class-D
25 dB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DD
Gain, headphone 0 dB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Crosstalk, class-D, P
Crosstalk, headphone, P
= 2 W @ 1 kHz –55 dB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
O
= 30 mW @ 1 kHz –70 dB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
O
Total harmonic distortion + noise, class-D, P
Total harmonic distortion + noise, headphone, P
DD
DD
DD
DD
= 1 W @ 1 kHz 0.14 %. . . . . . . . . . . . . . . . . . . . . .
O
= 30 mW @ 1 kHz 0.3 %. . . . . . . . . . . . . . . . .
O
9 V to 14 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.6 A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
350 mVrms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.6 Vrms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
55 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
147 µA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction
1-5
1-6
Introduction
Chapter 2
Quick Start
Follow the steps in this chapter to quickly prepare the TPA032D04 class-D
stereo audio amplifier EVM for use. Using the TP A032D04 class-D EVM 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 it can be wired directly into existing circuits or equipment.
The platform switch and jumper settings shown in T able 2–1 are typical for the
TPA032D04 class-D EVM. There are no jumpers or switches to set on
the TPA032D04 class-D EVM board, itself.
Table 2–1. Typical TI Plug-N-Play Platform Jumper and Switch Settings for the
TPA032D04 Class-D EVM
POWER TYPE (Note 2) JP1 JP4 JP5 JP6 JP7 JP8 S1 S2 (Note3) S3
VCC (J1) ON ON ON Mute X Lo ON OFF U5
Notes: 1) ON = Jumper installed, OFF = Jumper
2) Install a voltage regulator EVM (SLVP097) in platform socket U6 for VDD power to EVM control inputs.
3) Set to ON when tone control board SLOP109 is installed in U1.
NOT
Installed, X = Don’t care
T opic Page
2.1 Precautions 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Quick Start List for Platform 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3 Quick Start List for Stand-Alone 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Quick Start
2-1
Precautions
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.
In
+
7
Power
Audio
Input
Input
In
12
13
17
Quick Start Platform Map
SOURCE
J1
VCC
D4
AC/DC
J2
Right
In
Stereo
In
Left
In
INSTRUMENTS
1997
J3
J4
J5
JP2
JP1
DC
VCC(J1)
AC/DC
(J2)
Batt
D1
D2
D3
Signal Conditioning
Do not insert or remove
EVM boards with power
TEXAS
Plug-N-Play Audio Amplifier
Evaluation Platform
SLOP097 Rev. C.1
JP3
VR1
F1
VCC
C1+
LED1
****CAUTION****
applied
R1
U1
Off Pwr
1
GND
On
S1
Audio
Power
Amps
OnOff
ConditioningS2
TP1
ICC
JP4
B1
IDD
U5
119 108
JP5
U3 U4
R2
U2-U4
U5
HP
Source
SUPPLY
U2
HP(U5)
S3
R4
POWER
U6
LED2
VDD
JP6
Polarity
Lo
Hi
JP7
+
+
R3
J7
Out
Out
Out
Mode
Mute
Spk(U2-U4)
Out
JP8
C3 C2
HP Out
F2
Right
J8
+– +–
Right
Left
J9
Left
Stereo
In/Out
VDD
J10
R5
J6
VR2
DC
Power
In/Out
+
Speaker
Output
14
Headphone
Output
5
2-2
16
3
2
4 6
Quick Start
2.2 Quick Start List for Platform
Follow these steps when using the TPA032D04 class-D 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 details appear in Chapter 3.
-
Platform Preparations
Quick Start List for Platform
1) Ensure that all external power sources are set to
OFF
.
2) Install a TP A032D04 module in platform socket U2, taking care to align the
module pins correctly (EVM power pins engage sockets U2 and U3).
OFF
3) Set switch S2 to
.
4) Set switch S3 to U5.
5) Set jumper JP6 to select the
6) Set control signal Polarity jumper JP8 to
Mute
control input.
Lo.
Table 2–2. Platform Jumper and Switch Settings for the TPA032D04
POWER TYPE (Note 2) JP1 JP4 JP5 JP6 JP7 JP8 S1 S2 (Note3) S3
VCC (J1) ON ON ON Mute X Lo ON OFF U5
Notes: 1) ON = Jumper installed, OFF = Jumper
2) Install a voltage regulator EVM (SLVP097) in platform socket U6 for VDD power to EVM control inputs.
3) Set to ON when Tone Control Board SLOP109 is installed in U1.
-
Power supply
7) Connect a
OFF
) to J1, taking care to observe marked polarity.
8) Set jumper JP1 for dc source to be from input J1.
9) Set jumper JP4 for VCC power to EVMs.
10) Install a voltage regulator EVM (SLVP097) in platform socket U6.
11) Set jumper JP5 for VDD power to EVMs.
NOT
Installed, X = Don’t care
12-V
regulated power supply (ensure power supply is set to
-
Inputs and outputs
12) Ensure that the audio signal source level is set to minimum.
13) Connect the audio source to left and right RCA phono jacks J3 and J5 or
14) Connect 4-Ω – 8-Ω speakers to left and right RCA jacks J7 and J9 or to
-
Power up
15) Verify correct voltage and input polarity and set the external power supply
Platform LED1 and LED2 should light indicating the presence of VCC and
VDD, and the evaluation module(s) installed on the platform should begin
operation.
16) Set switch S2 to ON if tone control board SLOP109 is installed in U1.
17) Adjust the signal source level as needed.
stereo miniature phone jack J4.
stripped wire speaker connectors J8.
to
ON.
Quick Start
2-3
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