ICs for Audio Common Use
n Overview
The AN7164N is an integrated circuit designed for 47W
(V
CC
= 26.4V, 8Ω) output power amplifier. High power
output (BTL 47W), low distortion and low noise are real-
ized. High reliability is obtained due to same kinds of pro-
tectors built in. Furthermore, ON/OFF is enabled even if
power is supplied to power supply pin by stand-by circuit.
n Features
• High output power
• Low distortion, low noise
• Low shock noise from power ON/OFF operation
• Incorporates stand-by circuits
• Incorporates protection circuits
(Temperature, Overcurrent, Load Short, Output – GND
Short)
AN7164N
BTL 47W Audio Power Amplifier Circuit
2 11 12
6
1
5
3 4 8 9
7
10
VCC
GNDGND
Input
Circuit
Driver
Circuit
Output
Circuit
Ripple
Filter
Protection
Over Temp.
Load Short
Overcurrent
Output-GND
Short
Input
Circuit
Driver
Circuit
Output
Circuit
n Block Diagram
n Pin Descriptions
Pin No. Pin Name
1
2
3
4
5
6
Ripple Filter
NFB Ch.2
GND (Input)
NFB Ch.1
Input
Stand-by
Pin No. Pin Name
7
8
9
10
11
12
Output Ch.1
Bootstrap Ch.1
GND (Output)
Output Ch.2
Bootstrap Ch.2
VCC
29.96
–
0.3
29.6
–
0.3
12
1
Unit : mm
28.0
–
0.3
20.0
–
0.2
5.9– 0.25 7.7– 0.3 7.8– 0.25
1.2
–
0.1
2.54
0.6
–
0.1
3.5
–
0.3
0.35
+ 0.1
– 0.05
ø 3.6
R1.8
0.6
12-Lead SIP Package with Fin (Power Type) (HSIP012-P-000A)