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LA1140 Datenblatt(PDF) 1 Page - Sanyo Semicon Device

Teilenummer LA1140
Bauteilbeschribung  FM IF System for Car Radio
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Hersteller  SANYO [Sanyo Semicon Device]
Direct Link  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

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FM IF System for Car Radio
Overview
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.
Functions
.
IF amplification/limiter
.
Quadrature detector
.
AF preamplifier
.
AFC output
.
Signal meter output
.
AGC output
.
Muting bandwidth
.
Muting under weak signal strength
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.
Package Dimensions
unit : mm
3020A-SIP16
[LA1140]
SANYO : SIP16
Ordering number: EN 729E
Monalithic Linear IC
LA1140
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


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