A3845 Datasheet PDF - Allegro MicroSystems

This noise blanker integrated circuit contains all of the necessary circuitry for adding an extremely efficient (patented) noise-blanking technique to any type of AM tuner or receiver with RF input frequencies (or a first IF) to 30 MHz. The A3845ELW and A3845SLW feature dual audio channels and are intended for AM-stereo or independent sideband applications.

FEATURES
■ RF Blanking to 30 MHz
■ Single-Channel or Stereo Audio Blanking
■ Adjustable RF and Audio Blanking Time
■ Adjustable Audio Blanking Delay
■ Sample-and-Hold MOS Audio Gates
■ Internal Voltage Regulation
■ Minimum External Components

APPLICATIONS
■ AM and AM-Stereo Automotive Radios
■ CB Transmitter/Receivers
■ Short-Wave Receivers
■ Mobile Communications Equipment