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HA12181FP - AM Radio Noise Reduction

General 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.

Key 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 (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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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.