SAMSUNG S1A0241A01

DUAL EQ AMP WITH ALC
S1A0241A01
INTRODUCTION
9−SIP
The S1A0241A01 is a monolithic integrated clrcuit consisting of
a dual equalizer amplifier with ALC, and it is suitable for stereo
radio cassette-tape recorders.
FEATURES
•
Dual equalizer amplifier with built-in ALC circuit Low
noise; VNI = 1.0µV (Typ)
•
High open loop voltage gain: 80dB (Typ)
•
Wide operating supply voltage range:
VCC = 4.5V − 14V
•
Good ALC response balance between channels
•
Input coupling capacitor unnecessary
•
Diode or transistor for ALC unnecessary
•
Minimum number of external parts required
ORDERING INFORMATION]
Device
Package
Operating Temperature
S1A0241A01-I0B0
9−SlP
−20°C — + 75°C
BLOCK DIAGRAM
−
−
+
+
ALC
CONT
ALC
ALC
1
2
3
4
5
6
7
8
9
NF1
INPUT1
OUTPUT1
GND
ALC
CONT
VCC
OUTPUT2
INPUT2
NF2
1
S1A0241A01
DUAL EQ AMP WITH ALC
ABSOLUTE MAXIMUM RATINGS (Ta = 25°C)
Characteristic
Symbol
Value
Unit
Supply Voltage
VCC
16
V
Power Dissipation
PD
(NOTE) 550
mW
Operating Temperature
TOPR
−20 — +75
°C
Storage Temperature
TSTG
−20 — +125
°C
NOTE: Derated above Ta = 25 °C in the propotion of 5.5 mW/°C
ELECTRICAL CHARACTERISTICS
(Ta = 25°C, VCC = 7V, f = 1kHz, unless otherwise specified)
Characteristic
Symbol
Test Conditions
Min. Typ. Max. Unit
Quiescent Circuit Current
ICCQ
VI = 0
1.5
3.5
4.5
mA
Open Loop Voltage Gain
GVO
VO = 0.3V
70
80
−
dB
Closed Loop Voltage Gain
GVC
VO = 0.3V
45
48
50
dB
Output Voltage
VO
THD = 1%
0.6
1.2
−
V
THD
VO = 0.3V
−
0.1
0.3
%
R G=2.2kΩ, BW (−3dB)=20Hz − 20kHz
−
1.0
2.0
µV
15
25
45
kΩ
Total Harmonic Distortion
Equivalent Input Noise Voltage
VNI
Input Resistance
RI
−
ALC Range
∆VALC
R G = 3.9kΩ, THD = 10%
40
45
−
dB
ALC Balance
CBALC
VI = 1mV
−
0
2.5
dB
2
DUAL EQ AMP WITH ALC
S1A0241A01
TEST CIRCUIT
S1A0241A01
3
4
5
0.027µ F
SW2
4.3kΩ
120kΩ
6
7
1
SW10
1
2
4.3kΩ
18kΩ
220Ω
39Ω
10µ F
330µ F
Vcc
39Ω
10µF
SW11
10kΩ
SW4
C
SW7
3
100µ F
SW8
2
1
2.2kΩ
10kΩ
D
SW5
2
3.9kΩ
B
3.9kΩ
A
100µ F
120kΩ
SW9
2
18kΩ
9
0.027µ F
SW6
SW3
SW1
8
1MΩ
2
22µF
1
3
1
2.2kΩ
SG
SG
3
S1A0241A01
DUAL EQ AMP WITH ALC
TEST METHOD
Symbol
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
ICCQ
ON
OFF
1
ON
3
ON
ON
3
1
OFF
ON
GVO
ON
OFF
1
ON
1
ON
ON
3
1
OFF
ON
GVC
CH -1
OFF
ON
1
ON
1
ON
ON
3
1
OFF
ON
THD
CH -1
OFF
ON
1
ON
1
ON
ON
3
1
OFF
ON
VO
CH -1
OFF
ON
1
ON
1
ON
ON
3
1
OFF
ON
VNI
CH -1
OFF
ON
1
ON
2
ON
ON
3
1
OFF
ON
CH -2
ON
OFF
1
ON
3
ON
ON
2
1
ON
OFF
CH -1
OFF
OFF
2
OFF
1
OFF
ON
3
1
OFF
ON
OFF
OFF
2
OFF
1
OFF
OFF
1
2
OFF
OFF
∆ VALC
CBALC
4
DUAL EQ AMP WITH ALC
S1A0241A01
APPLICATION CIRCUIT
−
−
+
+
ALC
ALC
1
2
3
CONT
4
5
ALC
6
7
8
9
220
18K
Vcc
18K
7V
R1
R2
39
100µ
3.9K
3.9K
+
+
22µ
+
10µ
INPUT2
39
+
1M
+
+
330µ
10µ
+
10µ
OUTPUT2
OUTPUT2
+
10µ
100µ
INPUT2
NOTE:ON playback, connect the time constant circuit as shown below, instead of R1 of Pins 1, 3 and R2 of
Pins 7, 9, which are used in the NAB.
120kΩ
4.3kΩ
PIN 1,
PIN 7
PIN 3,
PIN 9
0.027µ
5
S1A0241A01
DUAL EQ AMP WITH ALC
APPLICATION CIRCUIT 1
S1A0241A01
2
3
4
5
6
7
8
100µ F/16V
4.7kΩ
9
120kΩ
10µ F/16V
P
10µ F/16V
R
22µF/16V
120kΩ
1MΩ
R
0.022µ F
(M)
10µ F/16V
P
0.022µ F
(M)
22kΩ
10µ F/16V
100µ F/16V
4.7kΩ
120kΩ
L
22kΩ
R
0.0022µ F(M)
2.7kΩ
220Ω
0.0022µF(M)
85KHz
2.7kΩ
100µ F/16V
120kΩ
39Ω
39Ω
0.0022µF(M)
GND
REC IN
1
15kΩ
85KHz
P
L
0.0022µ F(M)
GND
220Ω
R
15kΩ
Bias OSC
220pF
R
0.022µ F
(M)
M
1000pF
P
0.015µ F(M)
P
R
10kΩ
100µ F/16V
C1008
POWER
ON/OFF
22Ω
0.022µ F(M)
GND
VCC
- P : PLAY
- R : RECORD
6
PB OUT
R