ICs for Audio Common Use
n Overview
The AN7337N is a graphic equalizer IC for high perfor-
mance Hi-Fi developed for deck. It incorporates output
buffer circuit and 7 resonance buffer circuits, can set res-
onance frequency by external capacitor.
n Features
• Low noise : V
no
= 4µVrms typ.
• Low distortion : THD = 0.002% typ. (at V
O
= 1Vrms)
• High output power : V
O (max.)
= 9.5Vrms typ. (at. THD =
0.1%)
• Wide operating supply voltage range : V
CC (opr.)
= ±4 ~
±18V
AN7337N
7-Element Graphic Equalizer IC for Hi-Fi
1
2
3
4
5
6
7
8
9
10
25.0
–
0.3
1.22
–
0.25
3 ~15˚
20
19
18
17
16
15
14
13
12
11
6.35– 0.3
0.5
–
0.25
2.54
3.85– 0.25 3.0– 0.25
0.6– 0.25
7.62– 0.25
3.25
–
0.3
0.25
+ 0.1
– 0.05
20-Lead DIP Package (DIP020-P-0300A)
Unit : mm
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9 10
+
–
+
–
+
–
+
–
+
–
–
+
–
+
–VCC GND +VCC
Output Buffer
Resonance
Section7
Resonance
Section6
Resonance
Section5
Resonance
Section4
Resonance
Section3
Resonance
Section2
Resonance
Section1
–
+
n Block Diagram