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Электронный компонент: S1A2220X01-IAU0

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EQUALIZER AMP WITH ALC
S1A2220X01
1
INTRODUCTION
The S1A2220X01 is a monolithic integrated circuit consisting of
a pre-amplifier and an ALC circuit for cassette tape recorders.
FEATURES
Low noise amplifier
Wide operating supply voltage range
V
CC
= 3.5V
-
14V
High output voltage
Low distortion
Wide ALC range
Good ALC pair characteristic for stereo tape recorders
ORDERING INFORMATION
BLOCK DIAGRAM
Device
Package
Operating Temperature
S1A2220X01-IAU0
S1A2220X01-IBU0
9
-
SlP
-
20
C -- +70
C
9
-
SIP
1
2
3
9
+
-
4
5
6
8
7
ALC
1
'
st
AMPOUT
INPUT
NF
ALC IN GND ALC OUT
BYPASS
OUTPUT
V
CC
S1A2220X01
EQUALIZER AMP WITH ALC
2
ABSOLUTE MAXIMUM RATINGS (Ta = 25
C)
ELECTRICAL CHARACTERISTICS
(Ta = 25
C, V
CC
= 5V, R
L
= 5.1K, R
G
= 600
, f = 1kHz, NAB, unless otherwise specified)
TEST CIRCUIT
Characteristic
Symbol
Value
Unit
Supply voltage
V
CC
15
V
Power dissipation
P
D
200
mW
Operating temperature
T
OPR
-
20 -- +70
C
Storage temperature
T
STG
-
40 -- +125
C
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
Quiescent Circuit Current
I
CCQ
V
I
= 0, ALC OFF
-
1.4
2.0
mA
Open Loop Voltage Gain
G
VO
-
66
69
-
dB
Closed Loop Voltage Gain
G
VC
V
O
= 0.7 V
33
35
37
dB
Output Voltage
V
O
THD = 1 %
0.7
1.0
-
V
Total Harmonic Distortion
THD
V
O
= 0.2 V
-
0.1
-
%
Input Resistance
R
I
-
60
100
-
k
Equivalent Input Noise Voltage
V
NI
R
G
= 2.2k
, NAB
BW (
-
3dB) = 15Hz
-
30kHz
-
1.0
-
V
ALC Transistor Saturation Voltage
V
SAT
-
-
75
100
mV
2
3
1
9
8
7
5
+
+
+
+
S1A2220X01
C6
33
F
R4
56 K
R3
INPUT
C1
10
C2
100
F
R1
R2
C3
0.022
F
R
L
5.1 K
C4
10
F
OUTPUT
C5
30P
V
CC
= 5 V
* Pin 4: ALC IN
Pin 6: ALC OUT
12 K
6.8 K
100 K
EQUALIZER AMP WITH ALC
S1A2220X01
3
S1A2220X01
EQUALIZER AMP WITH ALC
4
APPLICATION INFORMATION
ALC Grade Binning Table
External Components (Refer to test circuits)
C
1
: Input coupling capacitor
The recommended value is 10
F. If made too small the low frequency characteristics will change for the
worse, and too large a capacitance value will increase the rising time when power is applied.
C
2
: Bypass capacitor
A short emitter resistor on the AC, which prevents an AC signal from feedback from being input.
C
3
: R
1
, R
2
: Equalizer network
The closed loop voltage gain is determined by these components in relation to the internal resistance at Pin 3.
C
4
: Output coupling capacitor
C
2
is determined as follows:
f
L
: low cut-off frequency
R
L
: load resistance
C
5
: Phase compensation capacitor.
Prevents high frequency oscillation by phase error when feedback is heavy.
C
6
: Ripple filter for power supply
A large value is required to get an excellent ripple characteristic under the line operation, but it must be made
smaller to shorten the starting time.
Symbol
A
V
(dB)
ALC Grade (dB)
Min.
Max.
Min.
Max.
S1A2220X01-IAU0
S1A2220X01-IBU0
34
36
-
16.0
-
25.0
-
27.0
-
34.0
C
4
=
1
2
F
L
R
L
EQUALIZER AMP WITH ALC
S1A2220X01
5
R
3
: Filter resistance
R
4
: Collector resistor of first stage transistor of the IC
Low voltage characteristic can be improved by adjusting this resistance.
ALC GRADE BINNING TEST CIRCUIT
Test condition: S.G. output level should be adjusted to be 13.8 mV of the AC voltmeter reading (V
B
) when the
D.U.T. is not connected to the test circuit (V
CC
= 5V, V
A
= 1.16V, Ta = 25
C).
ALC RANK is defined as ALC-G.R = 20 log V
B2
/V
B1
where
V
B1
: AC voltmeter reading when the D.U.T. is not connected,
V
B2
: AC voltmeter reading when the D.U.T. is connected.
4
1
9
6
5
+
S1A2220X01
V
CC
= 5 V
68 K
600
SG
5.6 K
12 K
100
V
B
V
AC VOLT
METER
V
A
10
/16V
S1A2220X01
EQUALIZER AMP WITH ALC
6
APPLICATION CIRCUIT
1
9
+
S1A2220X01
2
3
8
+
+
+
+
6
5
7
4
+
+
2.2K
MIC
RADIO
TAPE
4.7
/16V
100
/6.3V
56K
22P
12K
470
/10 & 6.3V
220
V
CC
4.7
10V
4.7
/10V
10K
IN60
2.2K
POWER
IN60
2
2
/
1
0
V
150K
2700p
2.7mH
0.01
15K
3300p
33K
6.8K
150p
44mH
220K
15
R/P Head
AUDIO BIAS CHECK
100
BIAS
OSC
5.6K
2
.
2
K
2
2
0
0
p
0.022
100
/6.3V
SW (PLAY/REC): PLAY