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 S4 to
OFF. To keep the module amplifier IC in the
single-ended output mode regardless of the control input state, set jumper
S4 to
ON.
7) Use jumpers S2 and S3 to set the gain when the module is in the BTL
output mode as shown in Table 2–6 (module gain is 1 in SE mode).
Table 2–6. TPA0122 EVM Gain Settings
S2
S3
OUTPUT MODE
GAIN (V/V)
OFF
OFF
BTL
2
OFF
ON
BTL
6
ON
OFF
BTL
12
ON
ON
BTL
24
X
X
SE
1
Note:
ON = Shunt installed, OFF = Open, X = Don’t care
-
Control inputs
8) 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.
-
Powerup
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.
Summary of Contents for TPA0122
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