Texas Instruments TPA701 - Manual (Page 17)

The TPA701 MSOP Audio Power Amplifier Evaluation Module
3-3 Details
3.2 The TPA701 MSOP Audio Power Amplifier Evaluation Module
The TPA701 MSOP Audio Power Amplifier Evaluation Module is powered by
a TPA701 700-mW Low-Power Audio Amplifier IC and includes an on-board
shutdown control signal switch.
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. TPA701 MSOP EVM
OUT+
IN
GND
Vdd GND
U1 †
R2
Shutdown
R3
OUT–
GND
C3
TEXAS
INSTRUMENTS
SLOP213
TPA701 MSOP EVM
C5
C2
C1
C4
S1
R1
+
† Due to the very small size of the MSOP IC package, the standard part number TPA701 is replaced with the code TIABA
Figure 3–3. TPA701 MSOP EVM Schematic Diagram
C1
1
µ
F
C2
1
µ
F
R1
20 k
Ω
Audio Input–
GND
Shutdown
S1
C5
5 pF
OUT–
GND
OUT+
R3
39 k
Ω
R2
20 k
Ω
No
C3
10
µ
F
C4
1
µ
F
Shutdown
Bypass
In+
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
+