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SEMICONDUCTOR INTEGRATED CIRCUIT, MAGNETIC DETECTING DEVICE, ELECTRONIC COMPASS, AND AMMETER

  • US 20130214777A1
  • Filed: 03/29/2013
  • Published: 08/22/2013
  • Est. Priority Date: 09/30/2010
  • Status: Active Grant
First Claim
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1. A semiconductor integrated circuit comprising:

  • a clock-signal generation circuit;

    a signal processing circuit outputting an intensity signal corresponding to an intensity of an external magnetic field based on a time interval between a first spike-shaped voltage waveform and a second spike-shaped voltage waveform in accordance with a clock signal output from the clock-signal generation circuit, the second spike-shaped voltage waveform being detected subsequent to the first spike-shaped voltage waveform, the second spike-shaped voltage waveform having an inverse sign to that of the first spike voltage waveform; and

    a clock-signal control circuit controlling intensity-signal output, which is output from the signal processing circuit, to be stopped in at least a forward outage time and a backward outage time, the forward outage time being previous to an apex point of a triangular wave and having 1 to 5% of a triangular wave period, the backward outage time being subsequent to the apex point of the triangular wave and having 1 to 5% of a triangular wave period.

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