Texas Instruments TPA6100A2, User Manual

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Quick Start List for Stand-Alone
2-4 Quick Start
2.3 Quick Start List for Stand-Alone
Follow these steps to use the TPA6100A2 EVM stand-alone or when
connecting it into existing circuits or equipment. Connections to the
TPA6100A2 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 2–2.
Figure 2–2.
Quick Start Module Map
6
2
4
4
5
6
† Due to the very small size of the MSOP IC package, the standard part number TPA6100A2 is
replaced with the code TIAJL.
Power supply
1) Ensure that all external power sources are set to
OFF.
2) Connect an external regulated power supply set between 1.6 V and 3.3 V
to the module VDD and GND pins taking care to observe marked polarity.
Inputs and outputs
3) Ensure that signal source level is set to minimum and that potentiometers
R1 and R4 are set to the midpoint.
4) Connect the audio source to the module IN1, IN2, and GND pins taking
care to observe marked polarity.
5) Connect the shutdown pin to V
DD
through a normally open switch.
6) Connect 32-
Ω
headphones to the module V
O
1 and V
O
2 pins through
33-
µ
F to 1000-
µ
F output-coupling capacitors (see Figure 3 – 8) and return
to the GND pin, or
7) For line output, connections to the V
O
1 and V
O
2 pins must be made
through 33-
µ
F to 1000-
µ
F output-coupling capacitors and returned to
GND.
Power-up
8) Verify correct voltage and input polarity and set the external power supply
to ON.
The EVM should begin operation.
9) Adjust the signal source level and potentiometers R1 and R4 as needed.