CPC G06F 7/5443 (2013.01) [G01R 19/16538 (2013.01); G01R 27/02 (2013.01); G04F 10/005 (2013.01); G06N 3/08 (2013.01); H03K 5/24 (2013.01)] | 9 Claims |
1. A method of performing a predetermined operation for a circuit that includes a resistor group comprising a plurality of resistors that are connected in series, one end of the resistor group being configured for connection to a power supply unit, the other end of the resistor group being configured for connection to a sampling capacitor, and a parasitic capacitance existing at each node between the plurality of resistors, the method comprising:
in a forward process, determining a time when a sampling capacitor voltage applied to the sampling capacitor reaches a first reference voltage as a switching time;
at the switching time, connecting the sampling capacitor to a ground or predetermined voltage and floating the power supply unit;
in a backward process, after the switching time, determining a time when a power supply unit voltage applied to the power supply unit reaches a second reference voltage as an end time; and
performing the predetermined operation based on the end time.
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