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LM3089N Datasheet

  • LM3089N

  • LM3089 FM Receiver IF System

  • 6頁

  • NSC

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LM3089 FM Receiver IF System
September 1992
LM3089 FM Receiver IF System
General Description
The LM3089 has been designed to provide all the major
functions required for modern FM IF designs of automotive
high-fidelity and communications receivers
Y
Y
Features
Y
Y
Y
Three stage IF amplifier limiter provides 12
mV
(typ)
b
3 dB limiting sensitivity
Balanced product detector and audio amplifier provide
400 mV (typ) of recovered audio with distortion as low
as 0 1% with proper external coil designs
Y
Y
Four internal carrier level detectors provide delayed
AGC signal to tuner IF level meter drive current and in-
terchannel mute control
AFC amplifier provides AFC current for tuner and or
center tuning meters
Improved operating and temperature performance es-
pecially when using high Q quadrature coils in narrow
band FM communications receivers
No mute circuit latchup problems
A direct replacement for CA3089E
Connection Diagram
Dual-In-Line Package
TL H 7149 鈥?2
Top View
Order Number LM3089N
See NS Package Number N16E
C
1995 National Semiconductor Corporation
TL H 7149
RRD-B30M115 Printed in U S A

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