Texas Instruments MIXED SIGNAL PRODUCTS TPA0103 - Manual (Page 17)

The TPA0103 Audio Power Amplifier Evaluation Module
3-3 Details
3.2 The TPA0103 Audio Power Amplifier Evaluation Module
The TPA0103 Audio Power Amplifier Evaluation Module is powered by a
TPA0103 3-channel audio power amplifier capable of delivering 535 mW of
continuous power to each of the left and right single-ended 4-
Ω
speaker loads,
and 1.75 W of continuous power (BTL) to a center channel 4-
Ω
load. The
amplifier IC can be configured for center channel only, center or L/R channels,
or three channel operation via two mode terminals. The evaluation module
includes jumpers for setting modes and control inputs for shutdown, selection
between two sets of stereo inputs, and switching between output modes.
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. TPA0103 EVM
GND
ROUT+
HP/L*
COUT–
MODE A
SDWN
GND
COUT+
LOUT+
C1
C2
R6
GND
GND
LIN
LHP
C3
R16
C10 C9
VDD GND
R9
C7
C6
RHP
RIN
GND
GND
S3
S4
S5
R11
C11
+
S2
MODE B
R5
S1
C12
R18
R2
R1
R3
R13
R14
R4
C8
R15
R12
R7 R8
R10
C5
TPA0103 EVM
REV. A
Lit.# SLOP103
–3
009228
R17
U1