Texas Instruments TPA0202 User Manual
TPA0202
Audio Power Amplifier
Evaluation Module
User’s Guide
May 1998 Mixed-Signal Products
SLOU016
IMPORTANT NOTICE
T exas Instruments (TI) reserves the right to make changes to its products or to discontinue any
semiconductor product or service without notice, and advises its customers to obtain the latest
version of relevant information to verify , before placing orders, that the information being relied
on is current.
TI warrants performance of its semiconductor products and related software to the specifications
applicable at the time of sale in accordance with TI’s standard warranty . T esting 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.
Certain applications using semiconductor products may involve potential risks of death,
personal injury , or severe property or environmental damage (“Critical Applications”).
TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, INTENDED, AUTHORIZED, OR
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT APPLICATIONS, DEVICES
OR SYSTEMS OR OTHER CRITICAL APPLICATIONS.
Inclusion of TI products in such applications is understood to be fully at the risk of the customer.
Use of TI products in such applications requires the written approval of an appropriate TI officer .
Questions concerning potential risk applications should be directed to TI through a local SC
sales office.
In order to minimize risks associated with the customer’s applications, adequate design and
operating safeguards should be provided by the customer to minimize inherent or procedural
hazards.
TI assumes no liability for applications assistance, customer product design, software
performance, or infringement of patents or services described herein. Nor does TI 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.
Copyright 1998, 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
TPA0202 STEREO 2-W AUDIO POWER AMPLIFIER
number SLOS205) This is the data sheet for the TPA0202 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
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.
Preface
(literature
(literature
Trademarks
TI is a trademark of Texas Instruments Incorporated.
Chapter Title—Attribute Reference
iii
If You Need Assistance
If You Need Assistance. . .
If you want to. . . Do this. . .
Request more information about
Texas Instruments mixed signal
products
Order Texas Instruments documentation
Ask questions about product operation or report suspected problems
Report mistakes in this document
or any other TI documentation
†
Texas Instruments Product Information Center
†
Call the PIC
(972) 644–5580
Or send a fax to the PIC:
(972) 480–7800
Or write to:
Texas Instruments Incorporated
Product Information Center, MS 3123
P.O. Box 660246
Dallas, Texas 75266
Call the PIC† hotline:
(972) 644–5580
Call the PIC† hotline:
(972) 644–5580
Send a fax to MSP Marketing Documentation
Correction: (972) 480–3160
Or send your comments to:
Texas Instruments Incorporated
MSP Marketing Documentation, MS 8710
P.O. Box 660199
Dallas, Texas 75266–0199
hotline:
iv
Running Title—Attribute Reference
Contents
1 Introduction 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Feature Highlights 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Description 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 TP A0202 EVM Specifications 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 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Details 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Precautions 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 The TPA0202 Audio Power Amplifier Evaluation Module 3-3. . . . . . . . . . . . . . . . . . . . . . . . .
3.2.1 TPA0202 Audio Amplifier IC 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.2 Depop Circuitry 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.3 BTL Operation 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.4 SIngle-Ended Operation 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.5 Inputs and Gain 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Using The TPA0202 EVM With the Plug-N-Play Evaluation Platform 3-7. . . . . . . . . . . . . . .
3.3.1 Installing and Removing EVM Boards 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.2 TPA0202 Module Jumper Settings and Switches 3-8. . . . . . . . . . . . . . . . . . . . . . . .
3.3.3 Signal Routing 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.4 Mute/Mode 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.5 Power Requirements 3-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.6 Inputs and Outputs 3-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Using The TPA0202 EVM Stand-Alone 3-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.1 TPA0202 EVM Connected for BTL Output 3-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4.2 TPA0202 EVM Connected for Single-Ended Output 3-17. . . . . . . . . . . . . . . . . . . . .
3.5 TPA0202 Audio Power Amplifier Evaluation Module Parts List 3-18. . . . . . . . . . . . . . . . . . .
Chapter Title—Attribute Reference
v
Running Title—Attribute Reference
Figures
1–1 The TI TPA0202 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 TPA0202 EVM 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–3 TPA0202 EVM Schematic Diagram 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–4 TPA0202 Amplifier IC 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–5 TPA0202 EVM Jumpers and Switches 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–6 Platform Signal Routing and Outputs 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–7 Mute/Mode and Polarity Control 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–8 Typical Headphone Plug 3-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–9 TPA0202 EVM Connected for Stereo BTL Output 3-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–10 TPA0202 EVM Connected for Stereo Single-Ended Output 3-17. . . . . . . . . . . . . . . . . . . . . . . .
T ables
2–1 Typical TI Plug-N-Play Platform Jumper and Switch Settings for the TPA0202 2-1. . . . . . . . .
2–2 Typical TPA0202 EVM Jumper Settings 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–3 Platform Jumper and Switch Settings for the TPA0202 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–4 Typical TPA0202 EVM Jumper Settings 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3–1 Typical TPA0202 EVM Jumper Settings for BTL Stand-Alone 3-16. . . . . . . . . . . . . . . . . . . . . .
3–2 Typical TPA0202 EVM Jumper Settings for Single-Ended Stand-Alone 3-17. . . . . . . . . . . . . .
3–1 TPA0202 EVM Parts List 3-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
vi
Chapter 1
Introduction
This chapter provides an overview of the Texas Instruments (TI) TPA0202
Audio Amplifier Evaluation Module (SLOP202). 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 A0202 EVM Specifications 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction
1-1
Feature Highlights
1.1 Feature Highlights
The TI TPA0202 Audio Amplifier Evaluation Module and the TI Plug-N-Play
Audio Amplifier Evaluation Platform include the following features:
-
TPA0202 Stereo 2-W Audio Power Amplifier Evaluation Module
J
J
J
J
J
J
J
J
-
Quick and Easy Configuration with The TI Plug-N-Play Audio Amplifier
Evaluation Platform
Internal depop circuitry to eliminate turn-on transients in outputs
Dual channel, bridge-tied load (BTL) or single-ended operation
3.3-V and 5-V operation
2 W per channel output power into 3 Ω at 5 V, BTL
850 mW per channel output power into 3 Ω at 3.3 V, BTL
Ultra-low current consumption in shutdown/mute mode (5 µA)
Internal input MUX selects among two sets of stereo inputs
Module gain adjustable between approximately 2 and 22
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 DC VCC supply inputs
J
External regulated VDD supply input
J
Socket for on-board 5 V/3.3 V VDD voltage regulator EVM
J
On-board overvoltage and reverse polarity power protection
-
Platform Audio Input and Output Connections
J
Left and right RCA phono jack inputs
J
Miniature stereo phone jack input
J
Left and right RCA phono jack outputs
1-2
J
Left and right compression speaker terminal outputs
J
Miniature stereo headphone jack output
Introduction
1.2 Description
The TPA0202 Stereo 2-W Audio Power Amplifier Evaluation Module is a
complete, 2-Watt per channel stereo audio power amplifier. It consists of the
TI TP A0202 Stereo 2-W Audio Power Amplifier IC along with a small number
of other parts mounted on a circuit board that measures approximately 2
inches by 1½ inches (Figure 1–1).
Figure 1–1.The TI TPA0202 Audio Amplifier Evaluation Module
Description
¼
D1
S2
R5
R11
S6
R13
S1
ROUT+
GND
ROUT–
HP/L*
SE/BTL*
R12
S7
MUTE
LOUT–
GND
LOUT+
C7
C6
R10
R8
R7
RHP
GND
RIN
GND
TPA0202 SAMPLE EVM
Lit.# SLOP202
S8
R2
GND
LIN
GND
LHP
C1
C2
R1
R3
RVDD GND
+
C11
C8 R9
U1
C3 R4
+
C12
LVDD GND
S5
S3
S4
C10C9
C5C4
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
Evaluation Platform, or to be wired directly into existing circuits and equipment
when used stand-alone.
The platform has room for a single TPA0202 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,
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.”
Introduction
1-3
TPA0202 EVM Specifications
1.3 TPA0202 EVM Specifications
Supply voltage range, V
Supply current, I
DD
DD
Continuous output power per channel, P
Audio input voltage, V
: SE 4 Vpp max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I
BTL 0.75 Vpp max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Minimum load impedance, R
L
3 V to 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
:4-Ω BTL, VDD=5 V 2 W. . . . . . . . . . . . . . . . . . . . . .
O
4-Ω BTL, V
=3.3 V 800 mW. . . . . . . . . . . . . . . .
DD
2 A max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Ω. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-4
Introduction
Chapter 2
Quick Start
The steps in this chapter can be followed to quickly prepare the TP A0202 audio
amplifier EVM for use. Using the TPA0202 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 platform switch and jumper settings shown in T able 2–1 are typical for the
TPA0202 EVM and will cause the TPA0202 to switch to single-ended output
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 TPA0202
EVM JP6 JP7 JP8 S2 S3
P-N-P Platform Mode X Hi Note 2 X
Notes: 1) X = Don’t care
2) Set S2 to ON when signal conditioning board is installed in U1; set S2
to OFF when no signal conditioning board is installed.
Table 2–2. Typical TPA0202 EVM Jumper Settings
EVM S1 S3 S4 S5 S6 S8
TPA0202 ON OFF OFF ON ON OFF
Note: S8 should remain OFF at all times.
ON = shunt installed
OFF = open
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 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Quick Start
2-1
Loading...