5 BAND DUAL GRAPHIC EQ AMP
S1A0234B01
1
INTRODUCTION
The S1A0234B01 is a monolithic integrated circuit developed
for the tereo 5 band graphic equalizer amplifier.
It consists of an operational amplifier, and four resonant circuits
with an active filter. It is suitable for radio cassette-tape record-
ers, car stereos or music centers.
FEATURES
Tone control with independent adjustment of each band through
external capacitor
Gain control through external variable resistor (Gain =
11dB)
Excellent cross talk characteristics (CT = 70dB Typ, at R
G
= 0)
Wide operating supply voltage range: V
CC
= 3.5V -- 14V
ORDERING INFORMATION
BLOCK DIAGRAM
Device
Package
Operating Temperature
S1A0234B01-Y0B0
24
-
SZlP
-
275
-
20
C -- + 70
C
24
-
SZIP
-
275
BIAS
2
4
6
8
10
12
14
16
18
20
22
24
NF1
BASE1
NF2
BASE2 NF3
BASE3 NF4
BASE4
BUFFER
OUT
OUT2
IN2
GND
1
3
5
7
9
11
13
15
17
19
21
23
NF1
BASE1
NF2 BASE2
NF3
BASE3
NF4
BASE4 OUT1 BUFFER
OUT
IN1
GND
S1A0234B01
5 BAND DUAL GRAPHIC EQ AMP
2
ABSOLUTE MAXIMUM RATINGS (Ta = 25
C)
ELECTRICAL CHARACTERISTICS
(Ta = 25
C, V
CC
= 8V, R
L
= 20K, Flat Mode, unless otherwise specified)
Characteristic
Symbol
Value
Unit
Supply Voltage
V
CC
15
V
Power Dissipation
P
D
500
mW
Operating Temperature
T
OPR
-
20 -- + 70
C
Storage Temperature
T
STG
-
40 -- + 125
C
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
f(Hz)
Conditions
Quiescent Circuit Current
I
CCQ
V
I
= 0
4.0
7.0
10.0
mA
Output Voltage
V
O
1 K
THD = 1%
500
600
-
mV
Total Harmonic Distortion
THD
1 K
-
-
0.1
0.3
%
Channel Balance
CB
1 K
-
-
1.0
0
1.0
dB
Cross Talk
CT
1 K
-
50
70
-
dB
Output Noise Voltage
V
NO
Flat, RG = 2.2K
BW(-3 dB) = 10Hz
-
30kHz
-
10
20
V
Flat
G
V
(Flat)
1 K
V
I
= 100mV
-
2.0
-
1.5
1.0
dB
100
300
Boost
G
V
(Boost)
1 K
V
I
= 100mV
9.0
11.0
14.0
dB
3 K
Voltage Gain
10 K
100
300
Cut
G
V
(Cut)
1 K
V
I
= 100mV
-
14.0
-
11.0
-
9.0
dB
3 K
10 K
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