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Reference voltage generator

  • US 9,557,759 B2
  • Filed: 10/14/2014
  • Issued: 01/31/2017
  • Est. Priority Date: 01/09/2014
  • Status: Active Grant
First Claim
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1. A reference voltage generator, comprising:

  • an electrostatic discharge (ESD) resistor;

    a first branch coupled to the ESD resistor and including a first capacitor;

    a second branch coupled to the ESD resistor and including a second capacitor, wherein the first and second capacitors are coupled in parallel;

    a first switch configured to control a first charge transfer path leading to the first branch; and

    a second switch configured to control a second charge transfer path leading to the second branch,wherein the first switch is controlled by a first clock signal and the second switch is controlled by a second clock signal,wherein at least one of frequency and duty ratio of the first clock signal is changed for tuning a resistance value of the ESD resistor.

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