Analog-to-digital converter
AssigneeIucf-Hyu (Industry-University Cooperation Foundation Hanyang University)
InventorsJaeduk Han, Eunsang Lee, Sanghun Lee, Changhyun Pyo
Life of this patent
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Abstract
An analog-to-digital converter (ADC) using a plurality of capacitor digital-to-analog converters (CDACs) includes a plurality of comparators, a plurality of CDACs each configured to generate a reference voltage, and a switch circuit configured to connect one CDAC among the plurality of CDACs to an n+1 comparator, based on a digital value output from an n comparator among the plurality of comparators, and the n+1 comparator may output a digital value based on a result of comparing the reference voltage of one CDAC among the plurality of CDACs with an input voltage.
Claims14
An analog-to-digital converter (ADC) using a plurality of capacitor digital-to-analog converters (CDACs), the ADC comprising:
- a plurality of comparators including a first comparator and a second comparator;
- a plurality of CDACs each configured to generate a reference voltage;
- and
- a switch circuit configured to connect one CDAC among the plurality of CDACs to the first comparator, based on a digital value output from the second comparator,
- wherein the first comparator is configured to output a digital value based on a result of comparing the reference voltage of one CDAC among the plurality of CDACs with an input voltage, and
- the first comparator is a comparator operating in a step subsequent to a current step and the second comparator is a comparator operating in the current step.
An analog-to-digital converter (ADC) using a plurality of capacitor digital-to-analog converters (CDACs), the ADC comprising:
- a plurality of comparators including a first comparator, a second comparator and a third comparator;
- a first CDAC configured to generate a first reference voltage based on a digital value output from a third comparator among the plurality of comparators;
- a second CDAC configured to generate a second reference voltage based on the digital value output from the third comparator among the plurality of comparators;
- and
- a switch circuit configured to connect the first CDAC or the second CDAC to a first comparator based on a digital value output from the second comparator among the plurality of comparators,
- wherein the first comparator is configured to output a digital value based on a result of comparing the first reference voltage or the second reference voltage with an input voltage,
- the first comparator is a comparator operating in a step subsequent to a current step, the second comparator is a comparator operating in the current step and the third comparator is a comparator operating in a step previous to the current step.
Dependencies are inferred from the claim text.