Texas Instruments TPA311 - Manual (Page 26)

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 2.5-V to 5.5-V power
supply range and the isolated OUT+ and OUT– lines for BTL operation re-
quirement 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
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
C5
C3
OUT–
GND
OUT+
GND
S1
GND VDD
R4
EVM
Literature #
SLOP116
U1
TPA311
SE\BTL*
R5
009227
–3
C4
R3
IN+
C2
Shutdown
R1
R2
C1
C5
C3
OUT–
GND
OUT+
GND
S1
GND VDD
R4
EVM
Literature #
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 module.