Texas Instruments TPA005D12 manual Quick Start List for Stand-Alone

Quick Start List for Stand-Alone

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-kΩpullup 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-Ωspeaker 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.

2-4 Quick Start