The Tpa721 Msop Audio Amplifier Evaluation Module; Tpa721 Msop Evm; Tpa721 Msop Evm Schematic Diagram; The Tpa721 Msop Audio Power Amplifier Evaluation Module - Texas Instruments TPA721 User Manual

3.2 The TPA721 MSOP Audio Power Amplifier Evaluation Module

The TPA721 MSOP audio power amplifier evaluation module is powered by
a TPA721 700-mW low-power audio amplifier IC. The EVM includes a
shutdown control signal input with an onboard switch for manual shutdown.
The 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. TPA721 MSOP EVM
† Due to the very small size of the MSOP IC package, the standard part number TPA721 is replaced with the code TIABC
Figure 3–3. TPA721 MSOP EVM Schematic Diagram
Shutdown
R1
20 kΩ
C2
NA
GND
C3
1 µF
Audio Input–
R4
20 kΩ
Note: NA is not assembled on PCB.
The TPA721 MSOP Audio Power Amplifier Evaluation Module
Shutdown
+
S1
R1
U1 †
C1
R2
R3
C2
R4
C3
TEXAS
INSTRUMENTS
IN–
SLOP215
GND

TPA721 MSOP EVM

S1
No
1
2
C1
3
R2
1 µF
0 Ω
4
R3
NA
Vdd GND
C4
C5
OUT–
GND
OUT+
R5
C6
VDD
2.5 V to 5.5 V
8
Shutdown V
O –
7
Bypass GND
6
In+ V
DD
C5
5
1 µF
In – V
O +
C6
R5
5 pF
39 kΩ
GND
C4
10 µF
+
OUT–
GND
OUT+
Details 3-3