BA7657S Ver la hoja de datos (PDF) - ROHM Semiconductor

Número de pieza

componentes Descripción

Fabricante

BA7657S

Broadband Triple Circuits Video Signal Switchers

ROHM Semiconductor 

●Pin descriptions (2/2)

BA7657S/F

Pin No.

Pin name

Reference

potential

Equivalent circuit

Function

Composite Video

18

input

2.5V

Input pin for composite signal

(Sync on Green).

HD Sync

2

－

Signal detector

Composite sync

17

－

output

20

VCC

5V

4

6

GND

0V

8

This pin is used to detect

whether or not the HD signal is

being input.

When the HD signal is being

input, the synchronization

signal separation circuit is

stopped.

Synchronization signal output

pin

Synchronization separation is

performed for the input signal

from pin 18 if the HD signal is

not being input.

Insert a decoupling capacitor

－

near the pin.

Use as large a GND pattern

－

area as possible.

6/16

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