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PDF BA7604N Data sheet ( Hoja de datos )
| Número de pieza | BA7604N | |
| Descripción | Video signal switcher | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Multimedia ICs
Video signal switcher
BA7604N
The BA7604N is a switching IC developed for use in VCRs. It has two-channel analog multiplexers, and features
wide dynamic range, and wide operating frequency range, and is suitable for switching audio and video signals.
•Applications
VCRs and TVs
•Features
1) Two 2-input / 1-output switches.
2) 5V power supply.
3) Low power consumption (42mW Typ.).
4) Excellent frequency characteristics
(10MHz, 0dB, Typ.).
5) Wide dynamic range (3.0VP-P Typ.).
6) High input impedance (20kΩ 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
Sa Sb
1 2 3 4 5 6 7 8 9 10
CTL Output
L IN2
H IN1
Sa, Sb: Non-clamped
1
1 page  
Multimedia ICs
•Measurement conditions
Parameter
Symbol
S1a
Switch settings
S2a S3a S1b S2b
Measurement
S3b method
Current dissipation
ICC 2 2 2 2 2 2 Ammeter
Maximum
output
level
IN1a Vom
3
2
2
2
2
2
IN2a Vom
2
3
3
2
2
2
IN1b Vom
2
2
2
3
2
2
IN2b Vom
2
2
2
2
3
3
Note 1
Voltage
gain
IN1a GV
3
2
2
2
2
2
IN2a GV
2
3
3
2
2
2
IN1b GV
2
2
2
3
2
2
IN2b GV
2
2
2
2
3
3
Note 2
IN1a CT
2
3
2
2
2
2
Interchannel
IN2a CT
3
2
3
2
2
2
crosstalk
IN1b CT
2
2
2
2
3
2
IN2b CT
2
2
2
3
2
3
Note 3
Frequency
character-
istic
IN1a Gf
3
2
2
2
2
2
IN2a Gf
2
3
3
2
2
2
IN1b Gf
2
2
2
3
2
2
IN2b Gf
2
2
2
2
3
3
Note 4
CTL pin
CTLa VTH
3
2
1
2
2
2
switching level CTLb VTH
2
2
2
3
2
1
Note 5
Total-
harmonic
distortion
IN1a THD
3
2
2
2
2
2
IN2a THD
2
3
3
2
2
2
IN1b THD
2
2
2
3
2
2
IN2b THD
2
2
2
2
3
3
Note 6
IN1a ZIN
1
2
2
2
2
2
Input
IN2a ZIN
2
1
3
2
2
2
impedance
IN1b ZIN
2
2
2
1
2
2
IN2b ZIN
2
2
2
2
1
3
Note 7
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 = 1MHz)).
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.
Note 6: Input a 1VP-P, 1kHz sine wave and measure the total-harmonic distortion of the output using a total-harmonic dis-
tortion meter.
Note 7: Measure the input pin voltage VIN50 when a current of DC50µA is flowing into the input pin. Measure the input
pin open-circuit voltage. The input impedance is given by Z = (VIN50 - VIN0) / 50 × 10-6[Ω].
BA7604N
5
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