TPA1517
www.ti.com
SLOS162D–MARCH 1997–REVISED FEBRUARY 2007
APPLICATION INFORMATION
AMPLIFIER OPERATION
The TPA1517 is a stereo audio power amplifier designed to drive 4-Ω speakers at up to 6 W per channel.
Figure 23 is a schematic diagram of the minimum recommended configuration of the amplifier. Gain is internally
fixed at 20 dB (gain of 10 V/V).
7
V
CC
V
CC
C
S
1 µF
C
IR
1
IN1
Right
+
C
OR
–
1 µF
60 k
ref
+
+
4
OUT1
× 1
–
470 µF
2.1 V
V
CC
2
5
Ref
SGND
PGND
V
CC
18 kΩ
2 kΩ
2 kΩ
10 kΩ
15 kΩ
15 kΩ
Mute
Standby
M/SB
8
× 1
3
SVRR
Mute/Standby Switch
(see Note A)
C
B
S1
2.2 µF
18 kΩ
Mute/Standby Select
(see Note B)
6.8 kΩ
S2
2.1 V
ref
C
OL
+
+
OUT2
6
× 1
60 k
–
C
IL
–
+
470 µF
9 IN2
Left
1 µF
GND/HS
10 – 20
Copper Plane
A. When S1 is open, the TPA1517 operates normally. When this switch is closed, the device is in mute/standby mode.
B. When S2 is open, activating S1 places the TPA1517 in mute mode. When S2 is closed, activating S1 places the
TPA1517 in standby mode.
C. The terminal numbers are for the 20-pin NE package.
Figure 23. TPA1517 Minimum Configuration
The following equation is used to relate gain in V/V to dB:
ǒ Ǔ
G
+ 20 LOG G
dB
VńV
11
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