Texas Instruments TPA0122, User Manual, Page: 32 / 34

Using The TPA0122 EVM Stand-Alone
3-16 Details
3.4 Using The TPA0122 EVM Stand-Alone
Using the TPA0122 audio power amplifier evaluation module stand-alone is
much the same as using it with the platform. The same 4.5-V to 5.5-V power
supply range and the isolated OUT+ and OUT– lines for BTL operation
requirement exists.
Note that the shutdown signal applied to the EVM SHUTDOWN pin must be
able to supply enough current to overcome the pullup resistor on the module
(100 k
Ω
).
3.4.1 TPA0122 EVM Connected for BTL Output
Figure 3–9. TPA0122 EVM Connected for Stereo BTL Output
Audio
Input
(Right)
Audio
Input
(Left)
External Shut
Down Control
(active low)
Right
Left
5 V
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
Table 3–3. Typical TPA0122 EVM Jumper Settings for BTL Stand-Alone
EVM S2 S3 S4
TPA0122 OFF OFF OFF
Note: ON = Shunt installed
OFF = Open