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PDF BA7630S Data sheet ( Hoja de datos )
| Número de pieza | BA7630S | |
| Descripción | Video switch for CANAL-Plus decoder | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Multimedia ICs
Video switch for CANAL-Plus decoder
BA7630S / BA7630F
The BA7630S and BA7630F are decoder switching ICs for the scrambled broadcasts in France. The ICs include a 3-
input multiplexer, 2-input multiplexers with 6dB amplifiers, and a 9-bit serial-to-parallel converter.
These ICs greatly simplify decoder switching, and can be connected to a control microprocessor using just two lines.
•Applications
Video cassette recorders
•Features
1) All the switching functions required for SECAM
CANAL plus decoder integrated onto one chip.
2) Built-in 9-bit serial-to-parallel converter for decoder
and TV control reduces number of microprocessor
wiring connections required.
3) Inputs have a sync-tip clamp.
4) The switch section can be used independently.
5) Low power consumption off a 5V supply.
•Absolute maximum ratings (Ta = 25°C)
Parameter
Power supply voltage
Power dissipation
Operating temperature
Symbol
VCC
Pd
Topr
Limits
BA7630S
BA7630F
9∗1
500∗2
600∗3
– 25 ~ + 70
Storage temperature
Tstg
– 55 ~ + 125
∗1 13V for switches 1 to 9.
∗2 Reduced by 5.0mW for each increase in Ta of 1°C over 25°C.
∗3 Reduced by 6.0mW for each increase in Ta of 1°C over 25°C.
Unit
V
mW
°C
°C
•Recommended operating conditions (Ta = 25°C)
Parameter
Symbol Min. Typ.
Power supply voltage
VCC 4.5 5.0
Max.
5.5
Unit
V
1
1 page  
Multimedia ICs
BA7630S
VCC = 5.0V
A1 A
A2
V
47µ
+
5.0V
SW1
A
12V A3
SW0
V
V1
Output
Measurement Circuit
Output
Measurement Circuit
1 BIAS
BUFF 22
2 21
SW12
3 20
SHIFT
CONTROL
REGISTER LOGIC
4 19
5
6
7
SW1
8
SW1SW2
SW12
LOGIC
LATCHES
18
17
16
15
SW2
9 14
SW4
SW3
10
SW3
13
11
BUFF
6dB
AMP
6dB
AMP
BUFF
12
Fig.2
BA7630S / BA7630F
Output
Measurement Circuit
Input
Measurement Circuit
Input
Measurement Circuit
Output
Measurement Circuit
Output
Measurement Circuit
Output
Measurement Circuit
Output
Measurement Circuit
Output
Measurement Circuit
5
5 Page 
Multimedia ICs
•Application examples
(1) Analog block
BA7630S pin layout
from
VTR TUNER OUT
from
DECODER OUT
from
TV OUT
from
VIDEO OUT
IN1
1µF
75Ω
3
IN2
1µF
75Ω
5
IN3
1µF
75Ω
7
IN4
1µF
75Ω
1
GND
6
BA7630S / BA7630F
6dB
AMP
6dB
AMP
VCC
VCC1
2 5V
+
47µF
OUT1
22
VCC2
R
75Ω
OUT2 470 ~ 1000µF
12
2SA933
VCC2
R
75Ω
OUT3
11
470 ~ 1000µF
2SA933
GND
13
to VCR
to
DECODER IN
to
TV IN
VCC2
5V
12V
R
100
390
(2) Digital block
Fig.11
VCC 4.5 ~ 13V
22k SW OUT
SW1 ~ SW9
OPEN
COLLECTOR
50kΩ
28kΩ
SW1 ~ SW4
ONLY
Fig.12
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet BA7630S.PDF ] | |
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