ROHM BA7604N Datasheet

1

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 (3.0V

P-P Typ.).

6) High input impedance (20kΩ Typ.).

7) Fast switching speed (50ns Typ.).

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Absolute maximum ratings (Ta = 25°C)

Parameter

Symbol Limits Unit

9V

mW

°C
°C

500

∗

VCC

Topr

Pd

Tstg

– 40 ~ + 85

– 55 ~ + 125

Power supply voltage
Power dissipation
Operating temperature
Storage temperature

∗

Reduced by 5.0mW for each increase in Ta of 1°C over 25°C.

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Block diagram

Sa Sb

12345678910

IN1a

VCCIN2a

CTLa

OUTa

OUTb

CTLb

IN2b

GND

IN1b

L IN2
H IN1

CTL Output

Sa, Sb: Non-clamped

2

Multimedia ICs BA7604N

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Equivalent circuits

R3

13.6k

R4
200

R5
33k

R17
12k

I1

0.6mA

I2

0.3mA

I4

0.6mA

I5
1mA

R7
100

R10
100

R11
100

R13
100

R14
100

R9
200

R6
20k

R12
200

R16
200

R15
200

R2

2.2k

R1
1k

Q4

Q5

Q7 Q8 Q10 Q11

Q12

Q9

Q3

Q2

Q1

OUT

V

CC

IN

Sa, Sb

R3
400

R4
400

R5
25k

R2
200

Q3

Q1

Q5

Q6

Q2 Q4

CTL

R6
25k

R1
50k

V

CC

I2

0.6mA

I1

0.25mA

I3

0.06mA

CTL