HA12181FP Datasheet | Hitachi Semiconductor

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: 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 Block Diagram R500 100 k IF AGC + C502 0.01µ 3.3µ Det. 1 14 C503 C504 0.22µ R502 22 k 12 15 R505 47 k AF AGC Rev.2, Jun. 1997, page 2 of 21 IF AGC...