Datasheet > 0232-702-067

0232-702-067

更新时间： 2024-11-06 12:51:19

品牌	Logo	应用领域
三洋 - SANYO		/
页数	文件大小	规格书
15页	519K
描述
FM IF SYSTEM FOR CAR RADIO

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0232-702-067 数据手册

Ordering number: EN 729E

Monalithic Linear IC

LA1140

FM IF System for Car Radio

Overview

Package Dimensions

unit : mm

The LA1140 is an IF system IC designed for FM car stereo

receivers. It features versatile muting characteristics and allows

receiver designers to realize the muting performance according

to their design concept. Since the muting characteristics can be

varied with a switch or a semi-fixed resistor, DX-Local

switching will be accomplished with ease.

3020A-SIP16

[LA1140]

Functions

IF amplification/limiter

Quadrature detector

AF preamplifier

AFC output

Signal meter output

AGC output

Muting bandwidth

Muting under weak signal strength

SANYO : SIP16

Features

Versatile muting

a) When muting operation is performed under a weak signal

strength, an attenuation slope of the audio output against

the input signal strength variations can be set at any given

value.

b) Maximum muting attenuation can be selected to be

approximately 6 to 40 dB.

c) Input signal strength level which actuates the muting

circuit can be set freely.

High limiting sensitivity (25 dBµ typ. with muting off)

provides a fine quieting characteristic.

High S/N (78 dB typ.)

Low distortion (0.05% typ.) avaiable if used with

double-tuned circuits.

Good AMR (63 dB typ. with 6 stages of differential IF

amplifiers).

Signal meter drive output proportional to the input signal

strength in dB (suitable to control multiplex IC LA3370).

Clamped (±V_BE) AFC output, bandwidth adjustable.

Delayed AGC output for front end circuit.

Small space factor due to single-ended package employed.

3 mm pitch of pin terminals permitting ease-to-write PC

board pattern.

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

93097HA(II)/D0994JN/N257TA/4105MW/3233KI,TS O090KI No.729-1/15

12 3 4 5 6 7...15

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