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LM3820N Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LM3820N
Description  AM Radio System
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM3820N Datasheet(HTML) 1 Page - National Semiconductor (TI)

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TLH7967
February 1989
LM3820 AM Radio System
General Description
The LM3820 is a 3-stage AM radio IC consisting of an RF
amplifier oscillator mixer IF amplifier AGC detector and
zener regulator
The device was originally designed for use in slug-tuned
auto radio applications but is also suitable for capacitor-
tuned portable radios
The LM3820 is an improved replacement for the LM1820
Features
Y
Input protection diodes
Y
Good control on sensitivity
Y
Improved SN and tweet
Y
Versatile building-block approach
Y
Gain-controlled RF stage
Y
Cascode IF amplifier
Y
Regulated supply
Y
Pin compatible with LM1820
Connection Diagram
Dual-In-Line Package
TLH7967 – 1
Order Number LM3820N
See NS Package Number N14A
Circuit Schematic
TLH7967 – 2
C1995 National Semiconductor Corporation
RRD-B30M115Printed in U S A


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