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Voltage supply circuit and microphone unit

  • US 20060147062A1
  • Filed: 01/05/2006
  • Published: 07/06/2006
  • Est. Priority Date: 01/06/2005
  • Status: Active Grant
First Claim
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1. A voltage supply circuit comprising:

  • a booster outputting a voltage boosted from a power supply voltage; and

    an amplifier operating with a voltage output from the booster as a power supply and supplying a bias voltage to a sensor, wherein an output voltage value of the booster is set according to a signal for specifying a sensitivity of the sensor.

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