TPA0252EVM User Guide Datasheet by Texas Instruments

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{5’ TEXAS INSTRUMENTS

  
 
2001 Mixed-Signal Products
Users Guide
SLOU102
statements all/erent from or beyond the Qarameters Also see: Standard Terms and Condilmns of Sate for Semiconductor Products.
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Copyright 2001, Texas Instruments Incorporated
Preface cause harm i0 you
iii
Read This First

How to Use This Manual
This document contains the following chapters:
Chapter 1—Introduction
Chapter 2—Operation
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
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.
TPA0252 Stereo 2-W Audio Power Amplifier
With Digital
Volume Control
(literature number SLOS288) This is the data
sheet for the TPA0252 audio amplifier integrated circuit.
Running Title—Attribute Reference
iv
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.
Contents Figures Tables
Running Title—Attribute Reference
v
Contents

1 Introduction 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Feature Highlights 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Description 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 TPA0252 EVM Specifications 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 Stand-Alone Connection Diagram 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5 Reference 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5.1 EVM Schematic 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5.2 EVM Parts List 2-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5.3 Module PCB Layers 2-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–1 The TI TPA0252 Audio Amplifier Evaluation Module 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–1 Quick Start Platform Map 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–2 Module Preparation 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–3 Stand-Alone Module Preparation 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–4 TPA0252 EVM Connected for Stereo BTL Output 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–5 TPA0252 EVM Schematic 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–6 TPA0252 EVM PCB 2-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–7 TPA0252 EVM Silkscreen 2-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–8 TPA0252 EVM Bottom Layer 2-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–1 Platform Jumper and Switch Settings for the TPA0252 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–2 Typical TPA0252 EVM Jumper Settings 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–3 Typical TPA0252 EVM Jumper Settings 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2–4 TPA0252 EVM Parts List 2-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
vi
Introduction
1-1
Introduction

This chapter provides an overview of the Texas Instruments TPA0252 audio
amplifier evaluation module (SLOP333). 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 TPA0252 EVM Specifications 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 1
Feature Highlights
1-2
Introduction
1.1 Feature Highlights
The TI TPA0252 audio amplifier evaluation module and the TI plug-n-play
audio amplifier evaluation platform include the following features:
TPA0252 stereo 2-W audio power amplifier evaluation module
Internal depop circuitry to minimize transients in outputs
Powers up at mute volume level to avoid pop
Dual channel, bridge-tied load (BTL) or single-ended operation
2 W per channel output power into 3 at 5 V, BTL
Low current consumption in shutdown mode (150 µA)
Internal input MUX selects among two sets of stereo inputs
Digital volume control from 20 dB to –40 dB
Internal memory restores volume setting after shutdown or power
down
Microprocessor mode volume control
Differential stereo inputs
PC beep input
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
Platform provides quick and easy audio input and output connections
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
0000 0000 EH P333 2 EVM O O 0 [El m2 I:I GND 0 m m noun 0 5 i): m n: SEE IIEI IIEI (:3 In I: BE III] II! T m u up w m m E R‘ m o [-1 IExAs LOU“ O wswumws M GND 0 van 0 0 GND Low, 0
Description
1-3
Introduction
1.2 Description
The TPA0252 stereo 2-W audio amplifier evaluation platform is a complete,
2 W per channel stereo audio power amplifier. It consists of the TI TPA0252
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 TPA0252 Audio Amplifier Evaluation Module
GND
ROUT+
ROUT–
SE/BTL
S1
SHUTDOWN
GND
LOUT–
LOUT+
J1 UP
C3
VDD GND
L IN+
GND
L LINE–
L HP
VDD GND
R HP
R LINE–
GND
R IN+
C12
+
TPA0252 EVM
SLOP333
U1
TEXAS
INSTRUMENTS
R4
R1
D1
SHUTDOWN
C6
S2
S3 DOWN
UP
R2
C13
C8
C7
C9
C10
C11
R5
TP1
HP/LINE
HP–SE
J5
D2
VAUX
TP2
C2
C5
C4
C1
R3
J2 DOWN
J3 CLK
J4
PCBEEP
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 TPA0252 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. The 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 TPA0252 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- BTL, VDD = 5 V 2 W. . . . . . . . . . . . . . . . . . . . . .
Audio input voltage, VI: HP input 5 Vpp max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Line input 5 Vpp max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PC beep input 5 Vpp max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Minimum load impedance, RL 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-4
Introduction
Operation
2-1
Operation

Quick start lists in this chapter contain steps that can be followed to quickly
prepare the TI plug-n-play audio amplifier evaluation platform for use with the
TPA0252 audio amplifier EVM, or to connect the TPA0252 audio amplifier
EVM for stand-alone operation.
Using the TPA0252 audio amplifier evaluation module with the TI evaluation
platform is a quick and easy way to connect power, signal and control inputs,
and signal outputs to the EVM, using standard connectors.
The TPA0252 audio amplifier evaluation module can also be used stand-alone
by making connections directly to the module pins, and it can be wired directly
into existing circuits or equipment. A stand-alone connection diagram appears
below.
A schematic, parts list, and PCB and layer illustrations for the EVM are
included in the Reference section of this chapter.
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4 Stand-Alone Connection Diagram 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5 Reference 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 2
(D o fin-0@ gEllliiii CC In N O O O o o O O o o O o o o o o 0 ON‘“' 0 0 De nm men or remov o o EVM boards with pow r 0 ed 0 fimuampuag IE P‘ungrPlay Audm A Imar Evamamn P‘aflarm O SLOPDW Rev 0.1 «138$ AO 0000 I O 000 O 88 000 o o 0 o o o 000 o o 80 O o o 000 —o o O o 000 o O O o o o o O O O @@
Precautions
2-2
Operation
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
ConditioningS2
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-Play Audio 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
14
Quick Start List for Platform
2-3
Operation
2.2 Quick Start List for Platform
Use the following steps when using the TPA0252 EVM with the TI plug-n-play
audio amplifier evaluation platform (see the platform user’s guide, literature
number SLOU011, for additional details). Typical platform switch and jumper
settings are shown in Table 2–1 and typical EVM settings are shown in
Table 2–2. Numbered callouts for selected steps are shown in Figure 2–1 and
Figure 2–2.
Platform preparations
1) Ensure that all external power sources are set to OFF and that the platform
power switch S1 is set to OFF.
2) Install a TPA0252 module in platform socket U2, taking care to align the
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. This causes the TPA0252
to switch to the single-ended output mode if a plug is inserted into platform
headphone jack (J10).
6) If the headphone jack (J10) output will be used, set headphone source
switch S3 to U2–U4.
Table 2–1. Platform Jumper and Switch Settings for the TPA0252
EVM JP6 JP7 JP8 S2 S3
P-N-P Platform Mode X Hi Note 2 U2–U4
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.
Power supply
7) Select and connect the power supply (ensure power supply is set to OFF):
a) Connect an external regulated power supply, set to 5 V, to platform
VDD power input connector J6 taking care to observe the marked
polarity,
or
b) Install a voltage regulator EVM (SLVP097 or equiv.) in platform socket
U6. Connect a 7-V – 12-V power source to the platform VCC power
input J1 or J2 and jumper the appropriate power input (see the
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 the left and right RCA phono jacks J3 and J5
or the stereo miniature phone jack J4.
10) Connect speakers to the left and right RCA jacks J7 and J9 or to the
stripped wire speaker connectors J8.
2-4 O R UNEi aw i 0 fl 0 cm: Cam. 0 L W. o L UNEr 51 m 0 GND ram 0 L HP .Nsmumws SLOP333 IPA0252 EVM van 0 0 GND SHuTDOWN O LOUTr o W em: 0 Lem. o
Quick Start List for Platform
2-4
Operation
Evaluation module preparations
Figure 2–2. Module Preparation
11
12
GND
ROUT+
ROUT–
SE/BTL
S1
SHUTDOWN
GND
LOUT–
LOUT+
J1 UP
C3
VDD GND
L IN+
GND
L LINE–
L HP
VDD GND
R HP
R LINE–
GND
R IN+
C12
+
TPA0252 EVM
SLOP333
U1
TEXAS
INSTRUMENTS
R4
R1
D1
SHUTDOWN
C6
S2
S3 DOWN
UP
R2
C13
C8
C7
C9
C10
C11
R5
TP1
HP/LINE
HP–SE
J5
D2
VAUX
TP2
C2
C5
C4
C1
R3
J2 DOWN
J3 CLK
J4
PCBEEP
Table 2–2. Typical TPA0252 EVM Jumper Settings
EVM J1 J2 J3 J4 J5
TPA0252 ON ON ON ON ON
Note: ON = Shunt installed, OFF = Open
11) To use the PCBEEP input, set J4 to OFF and drive a 1-Vp–p, 1-kHz
squarewave into the capacitor side of the jumper. If the PCBEEP input is
not being used, set jumper J4 to ON.
12) To allow the EVM amplifier IC to switch from the line inputs to the HP inputs
when the output mode switches from BTL to SE (and vice versa), set
jumper J5 to ON. To allow the input and output modes to switch
independently, set jumper J5 to OFF.
13) When the module powers up or comes out of shutdown, the volume is set
at the –85 dB level. Press the UP pushbutton (S2), until the desired volume
level is reached.
Power up
14) Verify the correct voltage and input polarity and set the external power
supply to ON. If VCC and an on-board regulator EVM are used to provide
VDD, set the platform power switch S1 to ON.
Platform LED2 should light indicating the presence of VDD, and the evaluation
modules installed on the platform should begin operation.
15) Adjust the signal source level as needed.
Quick Start List for Stand-Alone
2-5
Operation
2.3 Quick Start List for Stand-Alone
Follow these steps to use the TPA0252 EVM stand-alone or when connecting
it into existing circuits or equipment. Connections to the TPA0252 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. Typical
EVM jumper settings are shown in Table 2–3. Numbered callouts for selected
steps are shown in Figure 2–3.
Power supply
1) Ensure that all external power sources are set to OFF.
2) Connect an external regulated power supply, set to 5 V, to the module VDD
and GND pins taking care to observe the 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
can be used with a differential or a 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.
2-6 O R HP 0 em: 0 R LLNEi O R N; EEEEEEE i fl 0 L N. o L LLNEi 5‘ 0 GND 0 L HP E SLOP333 IPA0252 EVM 0 nj m2 I: W 0 El] El] noun 0 B if [I] E SE LO EEEI Eu (:3 In In 7 DE] III] E m u UP IE U‘ III] III] R‘ m 0 III] ram Low, 0 van 0 0 GND LOW o
Quick Start List for Stand-Alone
2-6
Operation
Evaluation module preparations
Figure 2–3. Stand-Alone Module Preparation
6
7
GND
ROUT+
ROUT–
SE/BTL
S1
SHUTDOWN
GND
LOUT–
LOUT+
J1 UP
C3
VDD GND
L IN+
GND
L LINE–
L HP
VDD GND
R HP
R LINE–
GND
R IN+
C12
+
TPA0252 EVM
SLOP333
U1
TEXAS
INSTRUMENTS
R4
R1
D1
SHUTDOWN
C6
S2
S3 DOWN
UP
R2
C13
C8
C7
C9
C10
C11
R5
TP1
HP/LINE
HP–SE
J5
D2
VAUX
TP2
C2
C5
C4
C1
R3
J2 DOWN
J3 CLK
J4
PCBEEP
Table 2–3. Typical TPA0252 EVM Jumper Settings
EVM J1 J2 J3 J4 J5
TPA0252 ON ON ON ON ON
Note: ON = Shunt installed, OFF = Open
6) To use the PCBEEP input, set J4 to OFF and drive a 1-Vp–p, 1-kHz
squarewave into the capacitor side of the jumper. If the PCBEEP input is
not being used, set jumper J4 to ON.
7) To allow the EVM amplifier IC to switch from the line inputs to the HP inputs
when the output mode switches from BTL to SE (and vice versa), set
jumper J5 to
ON
. To allow the input and output modes to switch
independently, set jumper J5 to
OFF
.
8) When the module powers up or comes out of shutdown, the volume is set
at the –85 dB level. Press the UP pushbutton (S2), until the desired volume
level is reached.
Control Inputs
9) 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 the HP inputs; a low selects the LINE inputs.
c) SHUTDOWN: A low shuts down the amplifier IC on the module; a high
or float allows normal operation.
Power-up
10) Verify the correct voltage and input polarity and set the external power
supply to ON.
The EVM should begin operation.
11) Adjust the signal source level as needed.
Audio Input (Lem Moo {MM in III] EEEI cm EEEI 69 III] as m: cs III] 67 III] as III] 0 0 Ram. m D GNDO III] III] ROUL E ‘7 sgm (y i ° III] In con] [mm 53 DOWN c‘ ECU I'.I:I Jam cznzn arrow 52 up ”Mr? ”‘ Elm-1 m R3 I]:ll films, 5‘ W R2 OGND OLHP EH SLOP333 TPADZSZ EVM m m ‘P ‘E’ —SHuTDOWN o
Stand-Alone Connection Diagram
2-7
Operation
2.4 Stand-Alone Connection Diagram
Using the TPA0252 audio power amplifier evaluation module stand-alone is
much the same as using it with the platform. The same 4.5-V to 5.5-V power
supply range and the isolated OUT+ and OUT– lines for BTL operation
requirement exists.
Note that the source of any control signals applied to the EVM control pins
must be able to source or sink the current flowing through the pulldown or
pullup resistors on the module (100 k).
Figure 2–4 shows a TPA0252 EVM connected for stereo BTL operation.
Figure 2–4. TPA0252 EVM Connected for Stereo BTL Output
GND
ROUT+
ROUT–
SE/BTL
S1
SHUTDOWN
GND
LOUT–
LOUT+
J1 UP
C3
VDD GND
L IN+
GND
L LINE–
L HP
VDD GND
R HP
R LINE–
GND
R IN+
C12
+
TPA0252 EVM
SLOP333
U1
TEXAS
INSTRUMENTS
R4
R1
D1
SHUTDOWN
C6
S2
S3 DOWN
UP
R2
C13
C8
C7
C9
C10
C11
R5
TP1
HP/LINE
HP–SE
J5
D2
VAUX
TP2
C2
C5
C4
C1
R3
J2 DOWN
J3 CLK
J4
PCBEEP
Right
Left
5 VDC
Audio
Input
(Left)
Audio
Input
(Right)
1 HPrSE 7 n 7 J5 ' HP/LINE Hour 15 mm C“ } } 0'47 “F aw PCrBEEPH TP2 RL‘NE 010m.“ HF 15 Dz VAUX , H RL‘NE‘N VAUX PT 54 f as “0,47 uF 17 a m 047 “F 5“? H :HEL Jan, R, DD 012 C13 15 ‘T BYPASS 7 Oman uF v GND 10.51 0.47%; ‘9 DD ‘ cz“o.47m= LHP “ T LHP‘N ‘ CLK flgHLm 47 NF 7 53 ca “0 47 m: \ H 20 \ 5 3DOWN DOWN «2|— LLINEr c7 ‘ \u 47 “F LLINEIN 1 DOWN 21 _ 100 m UN H \ + cs H0 47 “F LIN ‘ up VDD _ 22 _ SBBTL sE/BTL ‘ PVDD ‘00 m R4 23 7 7 x F“ mu m mu kn Loun SHUTDOWN a s1 UPQ '— : 24 1 —|— 1, $2 I GND Loup 0 2-8
Reference
2-8
Operation
2.5 Reference
This section includes the TPA0252 EVM schematic, the EVM parts list, and the
module PCB layers.
2.5.1 EVM Schematic
Figure 2–5 shows the TPA0252 EVM schematic.
Figure 2–5. TPA0252 EVM Schematic
GND
UP
RLINEIN
HP/LINE
RHPIN
LOUT–
ROUT–
LOUT+
PC–BEEP
VAUX
SE/BTL
LHPIN
SHUTDOWN
GND
DOWN
PVDD
CLK
BYPASS
LLINEIN
RIN
VDD
PVDD
22
21
24
23
18
17
20
19
14
13
16
15
11
10
9
8
7
6
5
3
2
1
12
D2
LOUT–
LHP
VDD
RLINE–
ROUT+
RHP
ROUT–
SE/BTL
TPA0252
C13
0.47 µF
LIN+
RIN+
GND
LLINE–
SHUTDOWN SHUTDOWN
GND
VDD
C3 0.47 µF
ROUT+
LIN
DOWN
UP
S2
S3
R2
100 k
100 k
R3
J2
J1
DOWN
UP
C2 0.47 µF
J3
CLK
C1 0.47 µF
S1
R1
100 k
4
VAUX
TP2
D1 C4
0.47 µF
C5 0.47 µF
C11 0.47 µF
C10 0.47 µF
C9 0.47 µF
C12
10 µF
C8 0.47 µF
C7 0.47 µF
C6 0.47 µF
R4
100 k
HP–SE
J5 R5 100 k
LOUT+
TP1
HP/LINE
PCBEEP
J4
Reference
2-9
Operation
2.5.2 EVM Parts List
Table 2–4 is the TPA0252 EVM parts list.
Table 2–4.TPA0252 EVM Parts List
Ref. Description Size EVM
Qty. Manufacturer/
Part Number Digi-Key Number
C1, C2, C14,
C4–C11 Capacitor, 0.47 µF, 15 V,
+80%/–20%, Y5V 0805 11 Panasonic
2VF1C474Z Digi-Key
PCC1847TR–ND
C3 Capacitor, 0.47 µF, 50 V,
+80%/–20%, X7R 0805 1 Murata
GRM40-X7R473K050BL Arrow
GRM40-X7R473K
050BL
C12 Capacitor, 10 µF, 16 V,
+80%/–20%, Y5V 1210 1 Murata
GRM235–Y5V106Z16 Arrow
GRM235–Y5V106
Z16
R1–R5 Resistor, 100 k, 1/10 W,
5% 0805 5 Panasonic
ERJ-6GEYJ104V Digi-Key
P100KACT-ND
D1, D2 Diode, 1N4148,
MINIMELF SMD 2 MicroSemi
DL4148 Digi-Key
DL4148MSCT–ND
S1, S2, S3 Switch, momentary SMD 3 Panasonic
EVQ–PJX04K Digi-Key
P8050SCT-ND
TP1, TP2 Test points, red 2 Farnell
240–345
J1–J5 Header, 2 position 2 mm 5 Norcomp Digi-Key
2163S-02-ND
Shunts 2 mm 5 2JM–G Digi-Key
SPE1302–ND
Terminal posts, 0.1”
centers 9 Sullins
PTC36SABN Digi-Key
S1022–36–ND
U1 IC, TPA0252, audio
amplifier, 2 W, 2 channel 24 pin
TSSOP 1 TI
TPA0252PWP
2-10 von . 0 m noun o_| ' — z I .c12 an m . "“X Rour- 0 mm: _ 0 J4 sum—o ‘ c: 53 own I Cf JJCLK I I :32" "sz 52 "3‘ . .JHTP I - 5'" ["5 - snunmuo O LIN+ . LLINE— SIsuumovm 52- I I- ' ' 0 an Texas _ . up SLOPE} Instruments@ WELD : mozsz EVM W" 0 0 “D . mun 0 von . . mo : m, m I €12 m Roan HP “— v I I am . m IRL; E: a# - I‘m“ Rour— o . ME- on I n I» PcaEEP _ . m cm ' " 05-. u J4 sz/an 0 C9 504- I I c} 53 now» CI: JSCLK I I on I 2W“ 51 up 07 l I M “T, cs . . Ul 51' E' I I : LIN+ 51SHUTDOVIM R2 3 SHUIDOVIN . LLINE- - - __ 0 Gun Texas Low- 0 Lu? SLOPJJJ Instruments cm) mozsz EVM “W o o w . mu
Reference
2-10
Operation
2.5.3 Module PCB Layers
The following illustrations depict the TPA0252 EVM PCB layers and
silkscreen. These drawings are not to scale. Gerber plots can be obtained from
any TI Sales Office.
Figure 2–6. TPA0252 EVM PCB
Figure 2–7. TPA0252 EVM Silkscreen
Reference
2-11
Operation
Figure 2–8. TPA0252 EVM Bottom Layer
2-12
Operation

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