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PDF BA7603F Data sheet ( Hoja de datos )
| Número de pieza | BA7603F | |
| Descripción | Video signal switcher | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Multimedia ICs
Video signal switcher
BA7603 / BA7603F
The BA7603 and BA7603F are switching ICs developed for use in VCRs. Each contains three two-channel analog
multi-plexers. The switches have sync-tip clamped inputs and are ideal for switching video signals.
•Applications
Video cassette recorders and televisions
•Features
1) Three 2-input / 1-output switches.
2) Sync-tip clamped inputs.
3) 5V power supply.
4) Low power consumption (62.5mW Typ.).
5) Excellent frequency characteristics
(10MHz, 0dB Typ.).
6) Wide dynamic range (2.9VP-P Typ.).
7) Fast switching speed (50ns Typ.).
•Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Power supply voltage
VCC
Power dissipation
Pd
Operating temperature
Topr
Storage temperature
Tstg
∗ Reduced by 5.0mW for each increase in Ta of 1°C over 25°C.
Limits
9
500∗
– 40 ~ + 85
– 55 ~ + 125
Unit
V
mW
°C
°C
•Block diagram
IN2a 1
CTLa 2
OUTa 3
GND 4
OUTb 5
OUTc 6
CTLc 7
IN2c 8
16 IN1a
15 GND
14 IN2b
13 VCC
12 CTLb
11 IN1b
10 GND
9 IN1c
CTL Output
L IN 2
H IN 1
SWa, SWb, SWc: pedestal-clamped input
1
1 page  
Multimedia ICs
BA7603 / BA7603F
•Measurment conditions
Parameter
Switch settings
Symbol
S1a S2a S3a S1b S2b S3b S1c S2c S3c
Measurement
method
Current dissipation ICC
2 2 2 22 2 2 2 2
Maximum
output
level
Voltage
gain
Inter-
channel
crosstalk
Frequency
character-
istic
IN1a
IN2a
IN1b
IN2b
IN1C
IN2C
IN1a
IN2a
IN1b
IN2b
IN1c
IN2c
IN1a
IN2a
IN1b
IN2b
IN1c
IN2c
IN1a
IN2a
IN1b
IN2b
IN1c
IN2c
Vom 3 2 2 2 2 2 2 2 2 f = 1kHz,
Vom 2 3 3 2 2 2 2 2 2 THD = 0.5%
Vom 2 2 2 3 2 2 2 2 2
Vom 2 2 2 2 3 3 2 2 2
Note 1
Vom 2 2 2 2 2 2 3 2 2
Vom 2 2 2 2 2 2 2 3 3
GV 3 2 2 2 2 2 2 2 2 f = 1kHz,
GV 2 3 3 2 2 2 2 2 2 V = 1VP-P
GV 2 2 2 3 2 2 2 2 2
GV 2 2 2 2 3 3 2 2 2
Note 2
GV 2 2 2 2 2 2 3 2 2
GV 2 2 2 2 2 2 2 3 3
CT 2 3 2 2 2 2 2 2 2 f = 4.43MHz,
CT 3 2 3 2 2 2 2 2 2 V = 1VP-P
CT 2 2 2 2 3 2 2 2 2
CT 2 2 2 3 2 3 2 2 2
Note 3
CT 2 2 2 2 2 2 2 3 2
CT 2 2 2 2 2 2 3 2 3
Gf 3 2 2 2 2 2 2 2 2 f = 10MHz / f = 1MHz,
Gf 2 3 3 2 2 2 2 2 2 V = 1VP-P
Gf 2 2 2 3 2 2 2 2 2
Gf 2 2 2 2 3 3 2 2 2
Note 4
Gf 2 2 2 2 2 2 3 2 2
Gf 2 2 2 2 2 2 2 3 3
CTL pin
CTLa
VTH
1
2
1
22
2
2
2
2
switching CTLb VTH 2 2 2 1 2 1 2 2 2
level
CTLc
VTH
2
2
2
22
2
1
2
1
Note 5
Note 1: Connect a distortion meter to the output, and input a f = 1kHz sine wave. Adjust the output level until the output distortion is 0.5%.
This output voltage at this time is the maximum output level Vom (VP-P).
Note 2: Input a 1VP-P, 1MHz sine wave. The voltage gain is given by GV = 20 log (VOUT / VIN).
Note 3: Input a 1VP-P, 4.43MHz sine wave. The interchannel crosstalk is given by CT = 20 log (VOUT / VIN).
Note 4: Input 1VP-P, 1MHz and 10MHz sine waves. The frequency characteristic is given by Gf = 20 log (VOUT (f = 10MHz) / VOUT (f = 10MHz)).
Note 5: Input a 1VP-P, 1MHz sine wave. Reduce the CTL pin voltage from VCC.
The CTL pin switching level (VTH) is the CTL pin voltage at which the VOUT level drops below 20mVP-P.
5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet BA7603F.PDF ] | |
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