A3845

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 TAUDIO DELAY 5 AUDIO BLANK TIME (R) CNO CONNECT UAUDIO BLANK TIME (C) 6 7 8 DAUDIO OUT1 9 NC RO LYAUDIOIN1 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 ONABSOLUTE MAXIMUM RATINGS IS Rat TA = +25°C D OSupply Voltage, VCC . . . . . . . . . . . . . . 12 V FPackage Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . 1.78 W —Operating Temperature Range, TA dent sideband applications. A hi...