1

Multimedia ICs

Video signal switcher, 1

× 3-channel

with clamped-input

BA7653AF

The BA7653AF is a video-signal switching IC that contains a three-channel clamped-input multiplexer. The inputs

are sync-tip clamped (synchronous edge of the video input signals are aligned to the same voltage), and as the input

impedance is extremely large, it is possible to use a small value for the clamp capacitor (the recommended capacitor

is 0.01

µF (FZ) ceramic).

Video cassette recorders, television and camcorders

1) Small clamp capacitors can be used (ceramic,

3000pF (Min.), 0.01

µF (FS) (recommended)).

2) Low supply voltage operation possible. Supply volt-

age range is 3.7V to 7.7V.

3) Superimposition used for fast switching speed with

low switching noise (70nsec. Typ.).

Typ.).

6) Excellent frequency characteristics (10MHz, 0dB

Typ.).

7) Low interchannel crosstalk ( – 70dB Typ.).

8) Voltage can be applied to the control pins even

Parameter

Symbol

Limits

Unit

9V

mW

Topr

°C

Tstg

°C

Pd

– 25 ~ + 75

– 55 ~ + 125

Applied voltage

Power dissipation

Operating temperature

Storage temperature

Parameter

Symbol

Limits

Unit

V

4.0 ~ 7.0

Power supply voltage