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LA7583

IF Signal Processing Circuit (A2C PLL VIF + SIF) for TVs and VCRs

SANYO -> Panasonic 

Ordering number: EN5177

Monolithic Linear IC

LA7583

IF Signal Processing Circuit

(A2C PLL VIF + SIF) for TVs and VCRs

Overview

The LA7583 is a VIF + SIF IC that requires no adjustments. In

order to eliminate the need for adjustments in the VIF block, a

multi-network PLL has been developed and adopted for video

detection. In the SIF block, adjustments were eliminated by

using gyrator technology in the FM quadrature detector. In

addition to eliminating the need for adjustments, a buzz

canceller that suppresses Nyquist buzz has been built into the

LA7583 in order to provide excellent sound quality.

Package Dimensions

unit : mm

3067-DIP24S

[LA7583]

24

13

Features

. Elimination of VCO, AFT, and SIF coils eliminates the need

for adjustments.

. A variety of built-in filters.

. Built-in buzz canceller results in excellent audio

characteristics.

Note: A2C Automatic Adjustment Control

AQT Automatic Quadrature Tuning

1

12

21.2

0.81

1.78

0.48

0.95

SANYO : DIP24S

Functions

[VIF]

. VIF amplifier

. Equalizer amplifier

. AGC lag lead filter

.[1st SIF]

Preamplifier

.[SIF]

Limiter amplifier

.[mute]

Audio mute

. Multinetwork PLL

. AFT

. Video driver

. 1st SIF detector

. AQT detector (gyrator)

. AV mute

. BNC

. IFAGC

. AGC detector

. J/U switch

. FAGC

. Buzz canceller

. Built-in AGC filter

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

83095HA(II) No.5177-1/16

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