ICs for Audio Common Use
n Overview
The AN7171NK and AN7176K are ICs for power ampli-
fication of 14W (13.2V, 4Ω) output. It can provide stereo
operation since two BTL amplifiers are incorporated in a
chip. It incorporates various protective circuits, thus pro-
viding high reliability. The circuits can be turned on or off
with supply pins energized, because the stand-by circuit
is built-in.
n Features
• Two BTL 14W outputs built-in
• Stand-by circuit built-in
• Various protective circuits (for temperature, or against
over-voltage, short-circuit between output and earth
and between output and V
CC
, load short-circuit)
• Small shock noise at power ON/OFF
• Fewer external components required
• Good oscillation stability
AN7171NK, AN7176K
Dual BTL 14W Audio Power Amplifier Circuits
Unit : mm
6.33– 0.5
29.6
–
0.3
5.9– 0.25 7.7– 0.3 7.8– 0.5
1
16
29.96
–
0.3
0.6
–
0.2
1.778
ø 3.6
28.0
–
0.3
20.0
–
0.25
R1.80.6
1.2
–
0.1
3.5– 0.3
2.66
2.8– 0.3 12.5– 0.3
(14.1)
(4.06)
2.54
–
0.8
(0.25)
1.45– 0.25
1.8– 0.25
(1.2)
1.45– 0.25
Fin-attached 16-lead ZIP package (EZIP016-P-0660)
n Block Diagram
1
13
6
5
12
10
11 9
14
15
16
4
3
2
87
VCC
Ripple Filter
(Ch.1) IN
STAND-BY
(Ch.2) IN
GND
OUT (Ch.1) (+)
GND
OUT (Ch.1) (–)
OUT (Ch.2) (+)
OUT (Ch.2) (–)
GND
Input
Circuit
Driver
Circuit
Output
Circuit
Input
Circuit
Driver
Circuit
Output
Circuit
Input
Circuit
Driver
Circuit
Output
Circuit
Input
Circuit
Driver
Circuit
Output
Circuit
Stand-by
Circuit
Protection Circuit
NF
(Ch.2)
NF
(Ch.2)
NF (Ch.1) NF (Ch.1)