BA7657S View Datasheet(PDF) - ROHM Semiconductor

Part Name

Description

Manufacturer

BA7657S

Broadband Triple Circuits Video Signal Switchers

ROHM Semiconductor 

●Pin descriptions (1/2)

BA7657S/F

Pin No.

Pin name

1

Red1 Input

3

Green1 Input

5

Blue1 Input

7

Red2 Input

9

Green2 Input

11

Blue2 Input

Reference

potential

3.7V

when selected

0V

when not

selected

15

Blue output

19

Green output

21

Red output

2.0V

Equivalent circuit

Function

Vcc

6.8k

100

21k

2-channel switching of R,

G, and B signals.

Select between:

CTL: H input1

CTL: L input2

1k

Vcc

50

400

5mA

Output pins for RGB signals.

Insert resistance from 100 to

300 Ω near the pins to

suppress f peaks at high

frequencies.

16

Control

H≧1.8V

1k

L≦1.2V

50k

Vcc

35k CTL pins

Select between:

CTL: H input1

CTL: L input2

15k

12

VD1 input

13

VD2 input

23

HD2 input

24

HD1 input

H≧1.8V

L≦1.2V

2-channel switching of VD

and HD signals.

Select between:

CTL: H input1

CTL: L input2

14

VD output

VOH≧3.0V

22

HD output

VOL≦10.5V

Output pins for vertical

synchronization signal (VD)

And horizontal

synchronization signal (HD).

5/16

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