CPC G01R 19/257 (2013.01) [G01R 31/3835 (2019.01); H03M 1/66 (2013.01)] | 21 Claims |
1. A monitoring circuit comprising:
a digital-to-analog converter (DAC) comprising:
a clock input configured to receive a first clock,
a code input configured to receive a binary code,
an analog input configured to receive an input voltage, and
an output configured to provide an analog signal based on the binary code, and the input voltage;
a comparator comprising:
a first input coupled to the output of the DAC to receive the analog signal,
a second input configured to receive a reference voltage,
a clock input configured to receive a second clock having a faster frequency than the first clock, and
an output configured to provide a comparator signal based on the analog signal and the reference voltage; and
a binary code generator having an input coupled to the output of the comparator and an output configured to generate the binary code based on the comparator signal.
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