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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 TPA005D12 class-D EVM stand-alone or to
connect it into existing circuits or equipment. Connections to the TPA005D12
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.
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,
VDD2, and GND pins taking care to observe marked polarity. It is only
necessary to use the ground pins adjacent to the module power pins.
Inputs and outputs
3) Ensure that audio signal source level adjustments are set to minimum.
4) Connect the audio source to the module RIN+/RIN– and LIN+/LIN– pins
for class-D operation, taking care to observe marked polarity. For
single-ended input, the negative input pins (RIN– and LIN–) should be
connected to the ground of the audio signal source.
5) Connect a control signal to the module Mute pin, if necessary. The control
signal should be high (2 V to 5 V or left floating) for normal operation, or
low (tied to ground) to mute the output.
6) Connect a control signal to the module SD pin, if necessary. The control
signal should be high (2 V to 5 V or left floating) for normal operation, or
low (tied to ground) to shut down the TPA005D12 amplifier IC on the EVM.
Note that the control signals applied to the EVM mute and SD inputs must have
sufficient current capability to overcome the 100-kΩ pullup resistor on each
input. Miniature pushbutton switches on the EVM allow manual shutdown (S2)
and manual muting (S1) of the amplifier.
7) Connect a 4-Ω – 8-Ω speaker to the module Rout+/Rout– pins and
another speaker to the Lout+/Lout– pins, taking care to observe marked
polarity.
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 as needed.