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Using The TPA122 MSOP EVM Stand-Alone
3-11
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3.4 Using The TPA122 MSOP EVM Stand-Alone
Using the TPA122 MSOP Audio Power Amplifier Evaluation Module
stand-alone is much the same as using it with the platform. The same 2.5-V
to 5.5-V power supply requirement exists.
Note that the shutdown signal applied to the EVM SD pin must be able to
supply enough current to overcome the pulldown resistor on the module
(20 kΩ).
3.4.1 TPA122 MSOP EVM Connected as a Stereo Headphone Amplifier
Figure 3–8. TPA122 MSOP EVM Connected as a Stereo Headphone Amplifier
33 µF –
1000 µF
+
+
33 µF –
1000 µF
5 VDC
Audio
Input
(Right)
Audio
Input
(Left)
Shutdown
NO
GND
Vo2
IN2
GND
VDD GND
IN1
GND
R1
C3
R4
S1
Shutdown
C5
Vo1
GND
C2
TEXAS
INSTRUMENTS
SLOP127
TPA122 MSOP EVM
C4
R5
R3
R2
C1
U1
†
+
†
Due to the very small size of the MSOP IC package, the standard part number TPA122 is replaced with the code TIAAE