LM3089 Datasheet, PDF (1/6 Pages) National Semiconductor (TI) – 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
Features
Y _{Three stage IF amplifier limiter provides 12 mV (typ)}
b3 dB limiting sensitivity
Y _{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 _{Four internal carrier level detectors provide delayed}
AGC signal to tuner IF level meter drive current and in-
terchannel mute control
Y _{AFC amplifier provides AFC current for tuner and or}
center tuning meters
Y _{Improved operating and temperature performance es-}
pecially when using high Q quadrature coils in narrow
band FM communications receivers
Y _{No mute circuit latchup problems}
Y _{A direct replacement for CA3089E}
Connection Diagram
Dual-In-Line Package
Top View
Order Number LM3089N
See NS Package Number N16E
TL H 7149 – 2
C1995 National Semiconductor Corporation TL H 7149
RRD-B30M115 Printed in U S A