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PDF STV5726A Data sheet ( Hoja de datos )
| Número de pieza | STV5726A | |
| Descripción | 2-HEAD PLAYBACK AND RECORD AMPLIFIER FOR VCR | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de STV5726A (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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STV5726A
4-HEAD PLAYBACK AND RECORD AMPLIFIER FOR VCR
. ONE 5V POWER SUPPLY
. PLAYBACK/RECORD MODE SELECTION
THROUGH A LOGIC INPUT
. SO20 PACKAGE
. NO ADJUSTMENT FOR LUMINANCE RE-
CORDING
PLAYBACK MODE
. LOW NOISE AND WIDE BAND AMPLIFIERS
FOR 4 HEADS
. AUTOMATIC OFFSET CANCELLATION BE-
TWEEN THE 2 SELECTED HEADS
. ONE PLAYBACK OUTPUT
. ONE OUTPUT FOR AUTOMATIC VIDEO
TRACKING
. SP/LP ENVELOPE COMPARATOR
. SHORT-CIRCUIT SWITCHES ON UNUSED
HEADS
RECORD MODE
. RECORD AGC AMPLIFIER SAMPLED BY
SYNCHRO SIGNAL
. RECORDING SIGNAL LEVEL ADJUSTABLE
BY EXTERNAL RESISTOR
. SHORT-CIRCUIT SWITCHES ON UNUSED
HEADS
SO20
(Plastic Package)
ORDER CODE : STV5726A
PIN CONNECTIONS
IOUT SP
V1 SP
V2 SP
H1 SP
H2 SP
GND1
H2 LP
H1 LP
V2 LP
V1 LP
1
2
3
4
5
6
7
8
9
10
20 CA GCREC
19 RECIN/SWS
18 TRIV
17 CSYN
16 GND2
15 YCPB/SWR
14 VCC
13 SWIN
12 ENVC
11 IOUT LP
February 1997
1/6
1 page  
STV5726A
APPLICATION DIAGRAM
C4
22nF
R2
1kΩ I OUT SP
1
V1 SP
2
V2 SP
3
CH1S H1 SP
4
22nF
CH2S H2 SP
5
22nF
GND1
6
CH2L H2 LP
7
22nF
CH1L H1 LP
8
22nF
V2 LP
9
SW2-LP
V1 LP
10
SW1-LP
SW-SP
VCC
SWREC-SP
SW-M
IN
IOUT LP
60dB
FF C
OUT
CSYNC
60dB
CAGCREC
20
CAGC
22nF
19
RECIN/SWS
TRIV
18
1N4148
RRCC CRCC
8.2kΩ 22nF
RRCY CRCY
2.2kΩ 22nF
SWS
CREC
YREC
TRIV
CSYN
17
GND2
16
RADJ
12kΩ
1N4148
YCPB/SWR
15
CSYN
SWR
YCPB
60dB
60dB
VCC
SWREC-LP
VCC
14
SWIN
13
RSWM
8.2kΩ
RSWH
22kΩ
ENVC
12
I OUT LP
SW-L P
I OUT LP
11
C1
22nF
STV5726A
R1
1kΩ
L1 22µH
C2
22µF
C3
22nF
SWM
SWH
ENVC
VCC
SWITCH TABLE
SW-R
L
H
SW-M
L
H
L
H
L
H
SW-S
L
H
L
SW-H
L
H
L
H
L
H
L
H
L
H
L
H
Channel
SW1-SP
SW2-SP
SW1-LP
SW2-LP
SW-SP
SW-LP
SWREC-SP
SWREC-LP
ENVC (SPLP)
2-SP
1-SP
1-LP
OFF
OFF
2-LP
ON ON
2-SP
1-SP
OFF
ON
OFF
OFF
High IF LP > SP
Low IF LP < SP
1-LP ON OFF
2-LP
SP OFF ON OFF ON
ON
OFF
0V (1)
High Impedance (1)
LP
ON
OFF
ON OFF
OFF
High Impedance (1)
ON
0V (1)
Note : 1. The recording current can be set different for each of the four heads. To perform it the ENVC output is either at low level or high
impedance according to the selected head or mode. Then two external resistors with adequate value have to be connected
respectively between the ENVC and TRIV and SWM and TRIV, playing so that on the equivalent value of the RADJ resistor.
5/6
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet STV5726A.PDF ] | |
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