Texas Instruments TPA 311 사용자 설명서
Using The TPA311 EVM Stand-Alone
3-12
Details
3.4
Using The TPA311 EVM Stand-Alone
Using the TPA311 Audio Power Amplifier Evaluation Module stand-alone is
much the same as using it with the platform. The same 2-V to 5.5-V power sup-
ply range and the isolated OUT+ and OUT– lines for BTL operation require-
ment exists.
much the same as using it with the platform. The same 2-V to 5.5-V power sup-
ply range and the isolated OUT+ and OUT– lines for BTL operation require-
ment exists.
Note that the mute signal applied to the EVM shutdown pins must be able to
supply enough current to overcome the pulldown resistors on the modules
(20 k
supply enough current to overcome the pulldown resistors on the modules
(20 k
Ω
|| 20 k
Ω
for two EVMs).
3.4.1
TPA311 EVM Connected for BTL Output
Figure 3–8. TPA311 EVM Connected for Stereo BTL Output
5 VDC
Audio
Input
(Right)
5 VDC
Audio
Input
(Left)
External Mute
Control
(active high)
GND
Right
Left
C4
R3
IN+
C2
Shutdown
R1
R2
C1
C1
C5
C3
OUT–
GND
OUT+
GND
S1
GND
VDD
R4
EVM
Literature #
SLOP116
SLOP116
U1
TPA311
SE\BTL*
R5
009227
–3
C4
R3
IN+
C2
Shutdown
R1
R2
C1
C1
C5
C3
OUT–
GND
OUT+
GND
S1
GND
VDD
R4
EVM
Literature #
SLOP116
SLOP116
U1
TPA311
SE\BTL*
R5
009227
–3
Note:
The SE/BTL* (SE/BTL) EVM pin is pulled to GND through a 100-K
Ω
resistor on the mod-
ule.