Datasheet

The TPA711 MSOP Audio Power Amplifier Evaluation Module
3-3
Details
3.2 The TPA711 MSOP Audio Power Amplifier Evaluation Module
The TPA711 MSOP audio power amplifier evaluation module is powered by
a TPA711 700-mW low-power audio amplifier IC, includes a shutdown control
signal input with on-board switch, and can be operated in either the BTL or
single-ended output mode.
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. TPA711 MSOP EVM
OUT+
IN
GND
Vdd GND
U1
†
R2
Shutdown
R4
OUT–
GND
C3
TEXAS
INSTRUMENTS
SLOP214
TPA711 MSOP EVM
C5
C2
C1
R3
SE/BTL
C4
S1
R1
+
†
Due to the very small size of the MSOP IC package, the standard part number TPA711 is replaced with the code TIABB
Figure 3–3. TPA711 MSOP EVM Schematic Diagram
C2
1 µF
C1
1 µF
R1
20 kΩ
Audio Input+
GND
Shutdown
S1
C4
5 pF
OUT–
GND
OUT+
R3
39 kΩ
R2
20 kΩ
No
C5
10 µF
C3
1 µF
Shutdown
Bypass
SE/BTL
In
V
O–
GND
V
DD
V
O+
8
7
6
5
1
2
3
4
GND
VDD
2.5 V to 5.5 V
+
SE/BTL
R4
20 kΩ