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A3845 Datasheet AM NOISE BLANKER

Manufacturer: Allegro MicroSystems

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Overview

Data Sheet 27126B* 3845 AM NOISE BLANKER 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 frequen- RF IN 1 RF BYPASS 2 VCC 20 SUPPLY NC 19 NO CONNECT cies (or a first IF) to 30 MHz.

The A3845ELW and A3845SLW feature dual audio channels and are intended for AM-stereo or indepen- RF BIAS 3 RF AGC 4 T AUDIO DELAY 5 AUDIO BLANK TIME (R) 6 C NO CONNECT 7 NC U AUDIO BLANK 8 TIME (C) D AUDIO OUT1 9 RO LY AUDIOIN1 10 DET RF GATE 18 LOW 17 RF GATE HIGH 16 GROUND 15 RF BLANK TIME NC 14 NO CONNECT 13 NOISE DIFFERENTIATOR 12 AUDIO OUT2 11 AUDIO IN 2 Dwg.

PS-003-1A CONTRIENFUEERDENPCE ON ABSOLUTE MAXIMUM RATINGS IS R at TA = +25°C D O Supply Voltage, VCC .

Key Features

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

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