Texas Instruments TPA0122, User Manual, Page: 14 / 34

Quick Start List for Platform
2-4 Quick Start
-
Evaluation Module Preparations
Figure 2–2. Module Preparation
GND
ROUT+
ROUT–
SE/BTL
S1
SHUTDOWN
GND
LOUT–
LOUT+
C10
C2
C12
VDD GND
L IN+
GND
L LINE–
L HP
VDD GND
R HP
R LINE–
GND
R IN+
C9
+
TPA0122 EVM Board
SLOP206
U1
+
S3
TEXAS
INSTRUMENTS
R3
R2
S2
R1
SHUTDOWN
TP2
TP1
C1
C1
1
C5 C4 C3 R4 R5
S4
C6 C7 C8
11
12
Table 2–4. Typical TPA0122 EVM Jumper Settings
EVM S2 S3 S4
TPA0122 OFF OFF OFF
Note: ON = Shunt installed, OFF = Open
11) 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.
12) Use jumpers S2 and S3 to set the gain when the module is in the BTL
output mode as shown in Table 2–5 (module gain is 1 in SE mode).
Table 2–5. 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
-
Power Up
13) Verify correct voltage and input polarity and set the external power supply
to ON. If V
CC
and an onboard regulator EVM are used to provide V
DD
, set
platform power switch S1 to ON.
Platform LED2 should light indicating the presence of V
DD
, and the evaluation
modules installed on the platform should begin operation.
14) Adjust the signal source level as needed.