HA12181FP
AM Radio Noise Reduction System
ADE-207-171A (Z)
2nd. Edition
June 1997
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
Features
•
High noise cancelling capacity: 46 dB typ.
•
Less gain loss: G
V
= –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