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The TPA102 MSOP Audio Power Amplifier Evaluation Module
3-3
Details
3.2 The TPA102 MSOP Audio Power Amplifier Evaluation Module
The TPA102 MSOP audio power amplifier evaluation module is powered by
a TPA102 150-mW stereo audio amplifier IC. It includes a shutdown control
signal input with onboard switch and can drive either line-level outputs, 32-Ω
headphones, or 8-Ω speakers.
The evaluation module can be used with the TI plug-n-play audio amplifier
evaluation platform (Figure 3–1) or wired directly into circuits or equipment.
The module has single in-line header connector pins mounted to the under
side of the board. These pins allow the module to be plugged into the TI
platform, which automatically makes all the signal input and output, power, and
control connections to the module.
The module connection pins are on 0.1-inch centers to allow easy use with
standard perf board and plug board-based prototyping systems. Or, the EVM
can be wired directly into existing circuits and equipment when used
stand-alone.
The module appears in Figure 3–2 and its schematic is shown in Figure 3–3.
Figure 3–2. TPA102 MSOP EVM
GND
Vo2
C3
IN2
GND
VDD GND
IN1
GND
U1
†
R1
R2
C2
R5
S1
Shutdown
C4
Vo1
GND
C7
C1
TEXAS
INSTRUMENTS
SLOP125
TPA102 MSOP EVM
C5
R4
R3
†
Due to the very small size of the MSOP IC package, the standard part number TPA102 is re-
placed with the code TIAAC
Figure 3–3. TPA102 MSOP EVM Schematic Diagram
IN 1
Vo1
V
DD
Vo2
Bypass
GND
Shutdown
IN 2
R1
20 kΩ
C1
1 µF
R5
20 kΩ
C2
1 µF
R2
20 kΩ
C3
1 µF
S1
R4, 80 kΩ
8
7
6
5
1
2
3
4
Vo1
Vo2
Audio Input 1
Audio Input 2
Shutdown
(V
DD
to
Shutdown)
R3
80 kΩ
TPA102
MSOP
C4
10 µF
+
V
DD
V
DD
2.5 to 5.5 V
GND
C5
1 µF
NO