Texas Instruments TPA0202 - Manual (Page 15)

Quick Start List for Stand-Alone
2-5 Quick Start
2.3 Quick Start List for Stand-Alone
Follow these steps to use the TPA0202 EVM stand-alone or when connecting
it into existing circuits or equipment. Connections to the TPA0202 module
header pins can be made via individual sockets, wire-wrapping, or soldering
to the pins, either on the top or the bottom of the module circuit board.
Numbered callouts for selected steps are shown in Figure 2–3 and details
appear in Chapter 3.
Figure 2–3. Quick Start Module Map
GND
ROUT+
HP/L*
ROUT–
SE/BTL*
S7
MUTE
GND
LOUT–
LOUT+
S2
C5 C4
R1
R3
C1
C2 C12
LVDD GND R5
GND
GND
LIN
LHP
C3 R4
R2
C10 C9
RVDD GND
C8 R9
R7
R10
R8
C7
C6
RHP
RIN
GND
GND
R12
R13
S3
S4
S5
S6
R11
C11
+
D1
TPA0202 SAMPLE EVM
Lit.# SLOP202
U1
S1
+
S8
6
7
8
9
10
11
- Power supply
1) Ensure that all external power sources are set to OFF.
2) Connect an external regulated power supply set to 5 V to the module VDD
and GND pins taking care to observe marked polarity. Separate right
channel and left channel VDD supplies can be connected, or a single
supply can be used for both.
- Inputs and outputs
3) Ensure that audio signal source level adjustments are set to minimum.
4) Connect the audio source to the module RIN/LIN and GND or RHP/LHP
and GND pins of each channel taking care to observe marked polarity.
5) Select output mode:
a) For BTL output, connect an 3-
Ω
– 8-
Ω
speaker to the module OUT+
OUT– pins of each channel,
or
b) For single-ended output, connect a headphone or an 3-
Ω
– 8-
Ω
speaker to the module OUT+ and GND pins of each channel through
a 33
µ
F to 1000
µ
F output-coupling capacitor (Figure 3–10).