HA12181FP
AM Radio Noise Reduction System
Functions
• Buffer amp. for audio
• Linear approximate circuit for noise reduction
• IF Amp., detector, audio amp. and AGC circuit for noise detection
• Gate pulse generator
REJ03F0130-0200
(Previous: ADE-207-171A)
Rev.2.00
Jun 15, 2005
Features
• High noise cancelling capacity: 46 dB typ.
• Less gain loss: GV = –0.5 dB typ.
• Low total harmonic destortion and high signal-to noise ratio: THD = 0.06% typ., S/N = 75 dB typ.
• Operation supply voltage range: 7.0 V to 10 V (8.2 V typ.)
• Less external parts count
Rev.2.00 Jun 15, 2005 page 1 of 19