Datasheet

Stand-Alone Connection Diagram
2-7
Operation
2.4 Stand-Alone Connection Diagram
The power supply range is 4.5 V to 5.5 V and isolated RO/MO+ and LO/MO–
lines for BTL operation are required.
Note that the source of any shutdown signal applied to the EVM SHUTDOWN
pin must be able to sink the current flowing through the pullup resistor on the
module (100 kΩ) when the pin is held low.
Figure 2–4 shows a TPA0172 EVM connected for stereo BTL operation.
Figure 2–4. TPA0172 EVM Connected for Stereo BTL Output
Right
Left
5 VDC
Audio
Input
(Left)
Audio
Input
(Right)
GND
ROUT+
ROUT–
SE/BTL
S1
SHUTDOWN
GND
LOUT–
LOUT+
C11
C9
VDD GND
L IN+
GND
L LINE–
L HP
VDD
GND
R HP
R LINE–
GND
R IN+
C12
+
TPA0172 EVM Board
SLOP211
Rev. A
+
1999
TEXAS
INSTRUMENTS
R4
R3
TP1
C1
P1
R5
Q1
S3
R1
C3
C5
C4
TP2
U1
C2
C7
C6
C8
S4
R2
C10
S2
TP5
R6
R8
TP3
Q2
TP6
R7
R9
TP4