ROHM BA7605N Datasheet

1

Multimedia ICs

Video signal switcher

BA7605N

The BA7605N is a switching IC developed for use in VCRs. It has two two-channel analog multiplexers with a large
dynamic range, and wide operating frequency range. The switch has sync-tip clamped inputs and is ideal for switch­ing video signals.

•

Applications

Video cassette recorders and televisions

•

Features

1) Two 2-input / 1-output switches.

2) Sync-tip clamped inputs.

3) 5V power supply.

4) Low power consumption (42mW Typ.).

5) Excellent frequency characteristics
(10MHz, 0dB Typ.).

6) Wide dynamic range (2.9V

P-P Typ.).

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

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Absolute maximum ratings (Ta = 25°C)

Parameter

Symbol Limits Unit

V

CC 9V

500

∗

mW
Topr °C
Tstg – 55 ~ + 125 °C

– 40 ~ + 85

Pd

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

1

IN1a

2

VCC

3

IN2a

4

CTLa

5

OUTa6OUTb

7

CTLb

8

IN2b

9

GND

10

IN1b

L IN 2

H IN 1

Sa, Sb: clamp inputs

CTL Output

2

Multimedia ICs BA7605N

•

Equivalent circuits

R3
22k

R8
25k

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

R12
200

R16
200

R15
200

R2
4k

R1
1k

Q5

Q6

Q7 Q8 Q10 Q11

Q12

Q9

Q3

Q2

Q1

OUT

V

CC

IN

Sa,Sb

CTL

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