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Method for testing comparator and device therefor

  • US 9,897,649 B2
  • Filed: 09/14/2015
  • Issued: 02/20/2018
  • Est. Priority Date: 03/07/2012
  • Status: Active Grant
First Claim
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1. A device comprising:

  • a comparator comprising a first comparator input, a second comparator input, and a comparator output;

    a selection circuit comprising a first data input, a second data input, a select input and an output coupled to the first input of the comparator, the first input to receive a first voltage identifying a first extreme voltage of an operational voltage range, the second input coupled to receive a second voltage, the first extreme voltage between the first voltage and a second extreme voltage of the operational voltage range; and

    a delay path between the output of the comparator and the select input of the selection circuit that asynchronously selects the first data input of the selection circuit responsive to the second input being previously selected.

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