TECHNICAL NOTE

High-performance Video Signal Switchers

Broadband Triple Circuits

Video Signal Switchers

BA7657S/F, BH7659FS

●Description

The BA7657S, BA7657F, and BH7659FS are ICs that have been developed for use in PC monitors, HDTVs (high definition

televisions), and other high-resolution display devices. In addition to their wide-range switching circuits for RGB signals,

is superposed on the G signal, while the BH7659FS features an on-chip switch for I

These ICs can be used to simplify the input block configuration in advanced display devices.

●Features

1) Operates on 5 V single power supply.

2) Built-in wide-range RGB signal switches.

(BA7657S/F: fc = 230 MHz)

(BH7659FS: fc = 250 MHz)

4) Built-in separation (BUNRI) circuit for synchronization signal superposed on G signal. (BA7657S/F)

5) Built-in switch for I

6) Built-in power saving function. (BH7659FS)

●Use

PC monitors, Plasma displays, LCD monitors, and Other devices that use wide-range RGB signal switching.

●Lineup

Parameter

BA7657S/F

BH7659FS

Circuit current (mA)

35

25

Circuit current during low-power mode (mA)

―

14

RGB signal SW block frequency

characteristics (MHz)

230

250

Synchronization signal SW block circuit

configuration

2 digital switching circuits

4 CMOS analog switching circuits

Synchronization signal separation circuit

―

Package

SDIP24/SOP24

SSOP-A32

●Absolute Maximum Ratings（Ta=25℃）

Parameter

Symbol

Limits

Unit

Supply voltage

8.0

V

Power

dissipation

BA7657S

Pd

1200

mW

BA7657F

550

BH7659FS

800

Operating temperature

Topr

-25～+75

℃

Storage temperature

Tstg

-55～+125

℃

※

Deratings is done at 12mW/℃ (BA7657S), 5.5mW/℃ (BA7657F), 8mW/℃ (BA7659FS) above Ta=25℃.

●Operating Range（Ta=25℃）

Parameter

Symbol

Min.

Typ.

Max.

Unit

Supply voltage

4.5

5.0

5.5

V

※

This product is not designed for protection against radioactive rays.

Aug.2008