Texas Instruments TPA0242 - Manual (Page 16)

Quick Start List for Stand-Alone
2-6 Quick Start
- Evaluation module preparations
6) To allow the module SE/BTL control input to switch the amplifier IC
between single ended (SE) and bridge-tied load (BTL) output modes, set
output mode jumper S3 to
OFF. To keep the module amplifier IC in the
single-ended output mode regardless of the control input state, set jumper
S3 to
ON.
7) To allow the module HP/LINE control input to switch the amplifier IC
between using the HP pins and the LINE pins as the signal inputs, set the
input mode jumper S3 to
OFF. To keep the amplifier IC in the HP input
mode regardless of the control input state, set jumper S3 to ON.
- Control inputs
8) To allow the amplifier IC to switch from the LINE inputs to the HP inputs
when the output switches from BTL output mode to SE output mode and
vice versa, set jumper S4 to
ON. To allow the inputs and output modes to
switch independently, set jumper S4 to OFF. Connect control lines to the
various module control input pins as needed:
a) SE/BTL: A high selects the single-ended (SE) output mode; a low or
float selects the bridge-tied load (BTL) output mode.
b) SHUTDOWN: A low shuts down the amplifier IC on the module; a high
or float allows normal operation.
- Power-up
9) Verify correct voltage and input polarity and set the external power supply
to ON.
The EVM should begin operation.
10) Adjust the signal source level as needed.