LM3820 Datasheet (National Semiconductor)

LM3820, AM RADIO SYSTEM

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 capacitortuned portable radios The LM3820 is an improved replacem

LM3820 Features

* Y Input protection diodes Y Good control on sensitivity Y Improved S N 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 Circuit Schematic Order Number LM3820N Se