A3845 - AM NOISE BLANKER

Datasheet Summary

Description

Previous attempts at suppression of impulse noise in AM receivers have used

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.

Allegro

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Datasheet Details

Part number	A3845
Manufacturer	Allegro
File Size	152.88 KB
Description	AM NOISE BLANKER
Datasheet	A3845 Datasheet
Additional preview pages of the A3845 datasheet.

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Full PDF Text Transcription

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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.

Published: Oct 16, 2018 |