LM3361A Datasheet, PDF (1/6 Pages) National Semiconductor (TI) – LM3361A Low Voltage/Power Narrow Band FM IF System

August 1989
LM3361A Low Voltage Power Narrow Band FM IF System
General Description
The LM3361A contains a complete narrow band FM de-
modulation system operable to less than 2V supply voltage
Blocks within the device include an oscillator mixer FM IF
limiting amplifier FM demodulator op amp scan control
and mute switch The LM3361A is similar to the MC3361
with the following improvements the LM3361A has higher
voltage swing both at the op amp and audio outputs It also
has lower nominal drain current and a squelch circuit that
draws significantly less current than the MC3361 Device
pinout functions are identical with some slightly different op-
erating characteristics
Features
Y _{Functions at low supply voltage (less than 2V)}
Y _{Highly sensitive (}b_{3 dB limiting at 2 0 mV input typical)}
Y _{High audio output (increased 6 dB over MC3361)}
Y _{Low drain current (2 8 mA typ VCC}e_{3 6V)}
Y _{Minimal drain current increase when squelched}
Y _{Low external parts count}
Block Diagram and Test Circuit
Order Number LM3661AM
or LM3361AN
See NS Package Number
M16A or N16E
C1995 National Semiconductor Corporation TL H 5586
T1-TOKO RMC-2A6597HM
CF-MURATA CFU 455E
TL H 5586 – 1
RRD-B30M115 Printed in U S A