Quick Start List For Stand-Alone Operation; Power Supply; Inputs And Outputs; Evaluation Module Preparations - Texas Instruments
TPA3003D2EVM User Manual

Quick Start List for Stand-Alone Operation

2.1 Quick Start List for Stand-Alone Operation
Follow these steps to use the TPA3003D2EVM stand-alone or when
connecting it into existing circuits or equipment. Connections to the EVM
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.
2.1.1

Power Supply

1) Ensure that all external power sources are set to OFF.
2) Connect an external regulated power supply, set between 8.5 V and 14 V,
2.1.2

Inputs and Outputs

1) Ensure that the audio signal source level adjustments are set to minimum.
2) Connect the right and left positive audio source to the module RIN+ and
3) If using single ended inputs, ground the LIN+ and RIN+ pins and connect
Note:
If RIN+ and LIN+ on the EVM are connected to ground, the RINP and LINP
on TPA3003D2 IC are ac grounded through C2 and C3. For the best noise
performance, directly connect the input side (left side) of C2 and C3 to the
AGND side of C5 with a short trace or solder bridge.
2.1.3

Evaluation Module Preparations

Adjust the signal source level as needed.
2.1.4

Control Inputs

Note:
Refer to the TPA3003D2 data sheet for logic threshold voltage ratings.
1) SHUTDOWN: This pin is active low. A low on this pin shuts down the
2) MUTE: This pin controls the stereo class-D outputs of the amplifier
2-2
to the module VCC and GND pins, taking care to observe marked polarity.
LIN+ pins, respectively. Connect the right and left negative audio source
to the module RIN– and LIN– pins, respectively.
the signal source to RIN– and LIN–.
amplifier; a high on this pin places the amplifier in the active state. Leaving
this pin floating also allows normal amplifier operation. Holding down
switch S1 places the amplifier in the shutdown state. Releasing S1 returns
the amplifier to the active state. The absolute maximum voltage on this
terminal is V + 0.3 V.
CC
(ROUT+, ROUT–, LOUT+, and LOUT–). This pin is active high. A high on
this pin causes the outputs (OUT+ and OUT–) to instantaneously ramp
down in volume, which mutes the device. A low on this pin causes the
outputs (OUT+ and OUT–) to instantaneously ramp up to volume. The
absolute maximum voltage on this pin is 5.5 V.