S1A0291X01-A0B0 [SAMSUNG]
PB/REC PRE AMP FOR 2 DECK; PB / REC预放大器，适用于2 DECK
| 型号： | S1A0291X01-A0B0 |
| 厂家： | 
SAMSUNG |
| 描述： | PB/REC PRE AMP FOR 2 DECK |
| 文件： | 总8页 (文件大小：151K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PB/REC PRE AMP FOR 2 DECK
INTRODUTION
S1A0291X01
24- SDIP- 300
The S1A0291X01 is a monolithic integrated circuit consisting of
a dual input playback amplifier and a dual input record amplifier
for double-deck or auto-reverse operation.
It is suitable for 6V — 9V double-deck or auto-reverse cassette
applications.
FEATURES
•
•
•
•
•
•
•
•
Dual input two-channel playback amplifier
Two-channel record amplifier
Built-in ALC and Muting circuit
PB/REC and playback input select switch included
Power ON ALC discharge circuit included
Operating supply voltage: Vcc = 4V — 12V
REC/PB power on quick start circuit
Few external part required
ORDERING INFORMATION
Device
Package
24- SDlP- 300
Operating Temperature
- 25°C — +75°C
S1A0291X01-A0B0
1
S1A0291X01
PB/REC PRE AMP FOR 2 DECK
BLOCK DIAGRAM
MUTE
IN(2)
REC
OUT(2)
MUTE
SW
ALC
PB NF(2)
PB iN(2)
R/P SW
19
22 21
8
20
18
15
23
100K
100K
N.F
REC NF(2)
REC IN(2)
14
13
PB OUT(2)
VCC
24
16
PRE
PRE
INPUT
INPUT
REC.BIAS
RECORE
I.REF
MODE CONTROL
/BIAS CIRCUIT
ALC
DET
PB.BIAS
PLAYBACK
I.REF
VCC
17
9
REC GND
12
REC IN(1)
INPUT
N.F
INPUT
N.F
PRE
PB OUT(1)
PRE
1
11 REC NF(1)
100K
100K
2
3
4
5
7
6
10
PB NF(1)
A/B
SW
PB
GND
MUTE
IN(1)
REC
OUT(1)
PBiN(1)
ABSOLUTE MAXIMUM RATINGS ( Ta = 25°C)
Characteristic
Supply Voltage
Symbol
Value
Unit
V
V
12
CC
Power Dissipation
P
1000
mW
°C
D
Operating Temperature
Storage Temperature
T
- 25 — +75
- 55 — + 125
OPR
T
°C
STG
2
PB/REC PRE AMP FOR 2 DECK
S1A0291X01
ELECTRICAL CHARACTERISTICS
(Ta = 25°C, V = 9V, f = 1kHz, unless otherwise specified)
CC
Characteristic
Circuit Current
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
I
V = 0, REC MODE
10
18
26
mA
CCQ
I
V = - 80dBm
Open Loop Voltage Gain
Output Voltage
G
V
60
90
1.2
-
dB
V
I
VO
O1
THD = 1%, NAB
0.75
-
V = 0.2V, NAB
Total Harmonic Distortion
THD1
CT1
-
-
-
0.05
- 55
- 55
0.3
- 45
- 45
%
O
V = 0.5V, NAB
CH to CH
Cross Talk
dB
dB
O
V = 0.5V, NAB
Ain to Bin
CT2
O
Fiter: 20Hz - 20kHz
Equivalent Input Noise Voltage
V
-
1.2
2.2
mV
NI
RG = 2.2kW, V = 0
I
V = 68dBm, ALC off
Close Loop Voltage Gain
Output Voltage
G
58
1.2
-
60
1.6
62
-
dB
V
I
VC
V
THD = 1%, ALC off
O2
V = 0dBm, ALC off
Total Harmonic Distortion
ALC Output Voltage
ALC THD
THD2
0.2
1
%
V
I
V = - 20dBm
V
0.75
-
0.95
0.2
1.35
1.0
I
O(ALC)
V = - 20dBm
THD
%
I
ALC
R
ALC
V = - 60dBm, +3dB UP
ALC Range
40
-
50
-
dB
dB
dB
dB
I
(ALCR)
V = - 50dBm
Cross Talk (ALC)
CT3
- 55
- 60
- 55
- 40
- 40
- 40
I
REC input = GND
Record TO Playback Cross Talk
Muting Range
CT4
MR
-
PLAY output = 0.5V
V = - 20dBm
-
I
3
S1A0291X01
PB/REC PRE AMP FOR 2 DECK
TEST CIRCUIT
PB
OUT
PB
B-IN
PB
A-IN
MUTE
OUT
MUTE
IN
REC
OUT
REC
IN
Vcc = 9V
OPEN = CLOSE LOOP
SHORT = OPEN LOOP
SW4-1
W
W
W
2.2k
10k
100
W
10k
10k
W
10 mF
10mF
10 mF
m
47 F
SHORT=
MUTE NO
24
23
22
21
20
19
18
17
16
15
14
13
12
S1A0291X01
1
2
3
4
5
6
7
8
9
10
11
GND
= A-IN
GND
= PLAY
SHORT = B-IN
SHORT = REC
SW1
10
SW2
47
m
F
m
10 F
m F
10
m F
10
m F
10k
W
10k
W
10k
W
100
W
2.2k W
SW4-2
OPEN = CLOSE
LOOP
SHORT = OPEN
LOOP
PB
OUT
PB
B-IN
PB
A-IN
MUTE
IN
MUTE
OUT
REC
OUT
REC
IN
NOTE: These specifications are subject to change without notice.
4
PB/REC PRE AMP FOR 2 DECK
S1A0291X01
APPLICATION INFORMATION
1. R/P SWITCH
Apply R/P input voltage at PIN 8.
PLAY: 0V (GND)
REC: 4.5V - 12V (Do not apply above 13V).
Only valid A/B input select in playback mode.
In record mode, the playback A-input is available and the ALC is turned on by record bias.
A. Record Mode Schematic
V
CC
P
R
A/B SELECT SW
5
R/P SW
8
CONTROL
CONTROL
A/B SELECT
DISABLE
REC BIAS ON
A-INPUT AVAILABLE
A-INPUT
BIAS
PLAYBACK
BIAS
B-INPUT BIAS
5
S1A0291X01
PB/REC PRE AMP FOR 2 DECK
B. Playback Mode Schematic
V
CC
P
R
A/B SELECT SW
R/P SW
5
8
CONTROL
CONTROL
A/B SELECT
VALID
REC BIAS OFF
A-INPUT
BIAS
PLAYBACK
BIAS
B-INPUT BIAS
NOTE: These specification are object to change without notice.
2. PLAYBACK A/B INPUT SELECT SWITCH(only playback mode)
V
CC
B
A
A/B SELECT SW
5
CONTROL
PLAY BACK
BIAS
A-INPUT BIAS
B-INPUT BIAS
6
PB/REC PRE AMP FOR 2 DECK
3. MUTE SWITCH
S1A0291X01
V
CC
SHORT=MUTE ON
10K
20
19
6
NOTES:
1. THIS CIRCUIT IS OPERATED ON REVERSE SATURATION MODE
2. These specifications are subject to change without notice.
7
S1A0291X01
PB/REC PRE AMP FOR 2 DECK
APPLICATION CIRCUIT
R / P
P B
R E C I N
O U T
F m
0 . 0 2 2
C 1 0
1 0 0 0 p F
C 3 1
F m
0 . 0 1 8
C 3 0
F m / 1 0 V 1 0 0
C 3 0
F m / 1 0 V 1 0 0
C 1 4
F m / 5 1 0 V
1 0 0 C 2 5
F m / 5 1 0 V
C 1 3
W
W
W
1 0 0 p F
C 2 9
R 2 2
1 0 0
F m
0 . 0 2 2
C 7
F m / 1 0 V 1 0 0
C 2 4
R 2 1
5 6 0 k
F m / 1 0 4 V 7
R 2 0
C 2 3
8
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