LA7555 View Datasheet(PDF) - SANYO -> Panasonic

Part Name

Description

Manufacturer

LA7555

IF Signal Processing (VIF+SIF) Circuit for TV / VCR Use

SANYO -> Panasonic 

Ordering number:ENN2927

Monolithic Linear IC

LA7555

IF Signal Processing (VIF+SIF)

Circuit for TV / VCR Use

Overview

The LA7555 is a full sync detection method VIF + SIF

monolithic linear IC using a PLL. It has excellent 920kHz

beat and buzz beat characteristics, making it ideal for use

in audio multiplexing and high-quality AV equipment.

Functions

• VIF section

· VIF amplifier · Video sync detecton · IF AGC

· B/W NC

· RG AGC

· AFT

· VCO

· APC DET

· Lock DET

• SIF section

· SIF limiter amplifer · FM quadrature detection

• Audio section

· DC attenuator

· AF driver

• Muting

· Audio muting (pin 2)

· AFT defeat (pin 14)

· Audio-Video simultaneous muting (pin 10, 13)

Package Dimensions

unit:mm

3067A-DIP24S

[LA7555]

21.0

24

13

1

12

0.9

(0.71)

1.78

0.48

0.95

Features

• 24-pin DIP shrink package being the smallest one used

for PLL ICs.

• Excellent 920kHz beat characteristics.

• Excellent buzz beat characteristics.

• High-gain VIF amplifier.

• High-speed AGC possible.

• Excellent power supply ripple characteristics.

SANYO : DIP24S

Specifications

Maximum Ratings at Ta = 25˚C

Parameter

Maximum supply voltage

Allowable power dissipation

Operating temperature

Storage temperature

Symbol

VCC max

Pd max

Topr

Tstg

Ta≤50˚C

Conditions

Ratings

Unit

13.8 V

1200 mW

–20 to +70 ˚C

–55 to +150 ˚C

Continued on next page.

Any and all SANYO products described or contained herein do not have specifications that can handle

applications that require extremely high levels of reliability, such as life-support systems, aircraft’s

control systems, or other applications whose failure can be reasonably expected to result in serious

physical and/or material damage. Consult with your SANYO representative nearest you before using

any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other

parameters) listed in products specifications of any and all SANYO products described or contained

herein.

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

O2500TN (KT)/N078YT, TS No.2927–1/11

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