User’s Guide
2001 Mixed-Signal Products
SLOU102
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Copyright 2001, Texas Instruments Incorporated
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
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
sheet for the TPA0252 audio amplifier integrated circuit.
(literature number SLOS288) This is the data
Read This First
(literature
iii
Running Title—Attribute Reference
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.
iv
Running Title—Attribute Reference
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents
v
vi
Chapter 1
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 TP A0252 EVM Specifications 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction
1-1
Feature Highlights
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 Ω 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
Microprocessor mode volume control
Differential stereo inputs
down
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 V
External regulated V
Socket for onboard 5-V/3.3-V V
Onboard overvoltage and reverse polarity power protection
Platform audio input and output connections
Left and right RCA phono jack inputs
DD
supply inputs
CC
supply input
DD
voltage regulator EVM
Miniature stereo phone jack input
Left and right RCA phono jack outputs
Left and right compression speaker terminal outputs
Miniature stereo headphone jack output
1-2
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
Description
GND
C12
D2
D1
R4
C5
C4
C1
C2
R2
TEXAS
INSTRUMENTS
TP2
PCBEEP
R1
VAUX
R3
J4
C3
J3 CLK
J2 DOWN
J1 UP
SHUTDOWN
ROUT+
GND
ROUT–
SE/BTL
S3
S2
LOUT–
GND
LOUT+
DOWN
UP
R HP
GND
R LINE–
R IN+
L IN+
L LINE–
GND
L HP
TP1
HP/LINE
R5
C11
C10
C9
C13
C8
C7
C6
S1
SHUTDOWN
SLOP333
TPA0252 EVM
VDD
+
HP–SE
J5
U1
VDD GND
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 platf o r m , o r t o b e w i r e d d i r e c tly 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, V
Supply current, I
Continuous output power per channel, P
Audio input voltage, VI: HP input 5 Vpp max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Minimum load impedance, R
DD
DD
: 3-Ω BTL, VDD = 5 V 2 W. . . . . . . . . . . . . . . . . . . . . .
O
Line input 5 Vpp max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PC beep input 5 Vpp max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
L
Introduction
4.5 V to 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 A max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Ω. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-3
1-4
Introduction
Chapter 2
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 existi n g c i r c u i t s o r 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation
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.Quick Start Platform Map
Power
Input
Audio
Input
7b
Off Pwr
1
14
On
ICC
JP4
S1
7b 7b
SUPPLY
POWER
U6
F2
VR2
7a
7b
SOURCE
J1
VCC
In
+
DC
VCC(J1)
JP1
(J2)
JP2
AC/DC
Batt
JP3
VR1
F1
C1+
DC
D4
AC/DC
In
J2
In
Right
J3
D3
D2
D1
LED1
VCC
R1
Signal Conditioning
Stereo
J4
9
In
U1
B1
Audio
Power
Amps
IDD
JP5
U3 U4
R2
U2
VDD
LED2
Out
J7
Right
J8
Out
+– +–
Right
In/Out
VDD
J6
Power
In/Out
+
10
Speaker
Output
5
Headphone
Output
Left
J5
In
TEXAS
INSTRUMENTS
1997
****CAUTION****
Do not insert or remove
EVM boards with power
applied
Plug-N-Play Audio Amplifier
Evaluation Platform
SLOP097 Rev. C.1
ConditioningS2
GND
OnOff
TP1
U5
U2-U4
U5
HP
Source
HP(U5)
S3
R4
JP6
Polarity
Lo
Hi
JP7
+
+
R3
Out
Mode
Mute
Spk(U2-U4)
Out
JP8
C3 C2
HP Out
Left
J9
Left
Stereo
J10
R5
2-2
23 4
6
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 e x t e r n a l 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 TP A0252
to switch to the single-ended output mode if a plug is inserted into platform
headphone jack (J10).
Quick Start List for Platform
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 volt age regulator E V M ( S LVP097 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
10) Connect speakers to the left and right RCA jacks J7 and J9 or to the
or the stereo miniature phone jack J4.
stripped wire speaker connectors J8.
Operation
2-3
Quick Start List for Platform
Evaluation module preparations
Figure 2–2.Module Preparation
VDD
12
R HP
GND
R LINE–
R IN+
L IN+
L LINE–
GND
L HP
TP1
HP/LINE
R5
C11
C10
C9
C13
C8
C7
C6
S1
SHUTDOWN
SLOP333
TPA0252 EVM
+
C12
HP–SE
J5
VDD GND
D2
D1
R4
C5
C4
C1
C2
U1
R2
TEXAS
INSTRUMENTS
Table 2–2. Typical TPA0252 EVM Jumper Settings
EVM J1 J2 J3 J4 J5
TPA0252 ON ON ON ON ON
GND
TP2
PCBEEP
R1
VAUX
R3
J4
C3
J3 CLK
J2 DOWN
J1 UP
SHUTDOWN
ROUT+
GND
ROUT–
SE/BTL
DOWN
S3
S2
LOUT–
GND
LOUT+
11
UP
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 V
and an on-board regulator EVM are used to provide
CC
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.
2-4
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 externa l r egulated 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.
Quick Start List for Stand-Alone
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.
Operation
2-5
Quick Start List for Stand-Alone
Evaluation module preparations
Figure 2–3.Stand-Alone Module Preparation
VDD
R HP
GND
7
R LINE–
R IN+
L IN+
L LINE–
GND
L HP
TP1
HP/LINE
R5
C11
C10
C9
C13
C8
C7
C6
S1
SHUTDOWN
SLOP333
TPA0252 EVM
+
C12
HP–SE
J5
VDD GND
D2
D1
R4
C5
C4
C1
C2
U1
R2
TEXAS
INSTRUMENTS
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
GND
TP2
PCBEEP
R1
VAUX
R3
J4
C3
J3 CLK
J2 DOWN
J1 UP
SHUTDOWN
ROUT+
GND
ROUT–
SE/BTL
DOWN
S3
S2
LOUT–
GND
LOUT+
6
UP
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.
2-6
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 kΩ).
Figure 2–4 shows a TPA0252 EVM connected for stereo BTL operation.
Figure 2–4.TPA0252 EVM Connected for Stereo BTL Output
Stand-Alone Connection Diagram
Audio
Input
(Right)
Audio
Input
(Left)
R HP
GND
R LINE–
R IN+
L IN+
L LINE–
GND
L HP
TP1
HP/LINE
R5
C11
C10
C9
C13
C8
C7
C6
S1
SHUTDOWN
SLOP333
TPA0252 EVM
VDD
+
HP–SE
J5
U1
VDD GND
GND
C12
D2
D1
R4
C5
C4
C1
C2
R2
INSTRUMENTS
R1
TEXAS
5 VDC
TP2
VAUX
PCBEEP
R3
J4
C3
J3 CLK
J2 DOWN
J1 UP
SHUTDOWN
ROUT+
GND
ROUT–
SE/BTL
S3 DOWN
S2
UP
LOUT–
GND
LOUT+
Right
Left
Operation
2-7
Reference
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
RIN+
RLINE–
RHP
V
GND
LHP
LLINE–
LIN+
SE/BTL
DD
HP–SE
J5
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
HP/LINE
TP1
R5 100 kΩ
C13
0.47 µF
R4
100 kΩ
13
14
15
16
17
18
19
20
21
22
23
24
ROUT+
HP/LINE
RIN
RLINEIN
RHPIN
V
DD
LHPIN
LLINEIN
LIN
SE/BTL
LOUT+
GND
TPA0252
SHUTDOWN
GND
ROUT–
PC–BEEP
VAUX
PV
DD
BYPASS
CLK
DOWN
UP
PV
DD
LOUT–
12
11
10
C5 0.47 µF
9
8
7
CLK
6
J3
5
J2
4
J1
3
R1
100 kΩ
2
1
SHUTDOWN
PCBEEP
D1
0.47 µF
C1 0.47 µF
C2 0.47 µF
C3 0.47 µF
DOWN
UP
S1
J4
D2
C4
DOWN
R3
R2
VAUX
S3
100 kΩ
V
100 kΩ
UP
S2
ROUT+
ROUT–
TP2
GND
DD
SHUTDOWN
2-8
LOUT–
LOUT+
Operation
2.5.2 EVM Parts List
Table 2–4 is the TPA0252 EVM parts list.
Table 2–4.TPA0252 EVM Parts List
Reference
Ref. Description Size
C1, C2, C14,
C4–C11
C3 Capacitor, 0.47 µF, 50 V,
C12 Capacitor, 10 µF, 16 V,
R1–R5 Resistor, 100 kΩ, 1/10 W,5%0805 5 Panasonic
D1, D2 Diode, 1N4148,
S1, S2, S3 Switch, momentary SMD 3 Panasonic
TP1, TP2 Test points, red 2 Farnell
J1–J5 Header, 2 position 2 mm 5 Norcomp Digi-Key
Capacitor, 0.47 µF, 15 V,
+80%/–20%, Y5V
+80%/–20%, X7R
+80%/–20%, Y5V
MINIMELF
0805 11 Panasonic
0805 1 Murata
1210 1 Murata
SMD 2 MicroSemi
EVM
Qty.
Manufacturer/
Part Number
2VF1C474Z
GRM40-X7R473K050BL
GRM235–Y5V106Z16
ERJ-6GEYJ104V
DL4148
EVQ–PJX04K
240–345
Digi-Key Number
Digi-Key
PCC1847TR–ND
Arrow
GRM40-X7R473K
050BL
Arrow
GRM235–Y5V106
Z16
Digi-Key
P100KACT-ND
Digi-Key
DL4148MSCT–ND
Digi-Key
P8050SCT-ND
2163S-02-ND
Shunts 2 mm 5 2JM–G Digi-Key
Terminal posts, 0.1”
centers
U1 IC, TPA0252, audio
amplifier, 2 W, 2 channel
24 pin
TSSOP
9 Sullins
PTC36SABN
1 TI
TPA0252PWP
SPE1302–ND
Digi-Key
S1022–36–ND
Operation
2-9
Reference
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
2-10
Operation
Figure 2–8.TPA0252 EVM Bottom Layer
Reference
Operation
2-11
2-12
Operation
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