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HA12181FP - AM Radio Noise Reduction

Description

External parts DC voltage (V) (No Function input) Equivalent circuit 2.7 Influence of External parts Smaller than recommended value Longer distortion of recover.

No.

No.

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 HA12181FP 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 OR HPF1 LPF Pulse De.

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Full PDF Text Transcription

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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: 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 HA12181FP 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 OR HPF1 LPF Pulse Det.(2) (1) (2) 13 IF Input 16 Pulse Det.(1) Gate pulse Gen. IF Amp. LPF Det.
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