ICs for Audio Common Use
n Overview
The AN7062N is a high voltage integrated circuit de-
signed for pre-driver of 60W-class Hi-Fi audio amp.
Stereo operation is enabled due to two amplifiers built-in.
n Features
• High voltage
• Low noise : V
ni
= 2.5µV (typ.)
• Low distortion : THD = 0.003% (typ.)
• Good channel separation
• Wide operating supply voltage range
AN7062N
High Voltage Input Amplifier Circuit for Hi-Fi Power Amplifier
1
2
3
4
5
6
7
8
3 ~ 15˚
7.62– 0.25
0.3
+ 0.1
– 0.25
3.8– 0.25 (3.45)
0.51min.
2.54
1.2
–
0.25
0.5
–
0.1
Unit : mm
6.3– 0.25
18
17
16
15
14
13
12
11
21.7
–
0.3
9 10
18-Lead DIP Package (DIP018-P-300E)
n Block Diagram
4 5 6 7 8 9 11 12 13 14 15
16
17
1 18 10
3
2
GND –VCC1
+VCC
–VCC2
(L.F.B)(L.F.B)
Current Mirror
Cascade
Bootstrap
Emitter
Follower
Differential
Amplifier
Current Mirror
Cascade
Bootstrap
Differential
Amplifier
Emitter
Follower
Current Mirror
Current Source