LM3361A National Semiconductor, LM3361A Datasheet

Manufacturer Part Number

LM3361A

Description

LM3361A Low Voltage/Power Narrow Band FM IF System

Manufacturer

National Semiconductor

Datasheet

1.LM3361A.pdf (6 pages)

C 1995 National Semiconductor Corporation

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

Block Diagram and Test Circuit

Order Number LM3661AM

See NS Package Number

M16A or N16E

or LM3361AN

TL H 5586

T1-TOKO RMC-2A6597HM

CF-MURATA CFU 455E

Features

Functions at low supply voltage (less than 2V)

Highly sensitive (

High audio output (increased 6 dB over MC3361)

Low drain current (2 8 mA typ V

Minimal drain current increase when squelched

Low external parts count

3 dB limiting at 2 0 V input typical)

RRD-B30M115 Printed in U S A

3 6V)

August 1989

TL H 5586 – 1