Texas Instruments TPA0242, Руководство пользователя

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Using The TPA0242 EVM Stand-Alone
3-16 Details
3.4 Using The TPA0242 EVM Stand-Alone
Using the TPA0242 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 TPA0242 EVM Connected for BTL Output
Figure 3–9. TPA0242 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+
C11
C2
C13
VDD GND
L IN+
GND
L LINE–
L HP
VDD GND
R HP
R LINE–
GND
R IN+
C10
+
TPA00242 EVM Board
SLOP275
U1
+
TEXAS
INSTRUMENTS
R2
R1
PCBEEP
C1
C12
C6 C5 C4
R3
S2
C7 C8 C9
C3
SHUTDOWN
R4
S3 S4
HP/LINE
Table 3–2. Typical TPA0242 EVM Jumper Settings for BTL Stand-Alone
EVM S3
TPA0242 OFF
Note: ON = Shunt installed
OFF = Open