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US 11,909,414 B2Granted
Control of analogue to digital converters
AssigneeNordic Semiconductor ASA
InventorsHenrik Fon, Tor Øyvind Vedal
Life of this patent
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Abstract
A circuit portion comprising a clock domain is disclosed. A first clock is arranged to clock components in the clock domain. An analogue to digital converter is clocked by a second clock with a duty cycle. The second clock is derived from the first clock. The analogue to digital converter is arranged to output a feedback signal upon finishing a conversion of a sample, and the feedback signal is arranged to control the duty cycle.
Claims13
A circuit portion, comprising:
- a clock domain comprising a first clock arranged to clock components in the clock domain;
- an analogue to digital converter clocked by a second clock having a duty cycle, the second clock being derived from the first clock;
- a sampling module arranged to sample an output of the analogue to digital converter, wherein the sampling module is clocked by the second clock;
- a re-sampling module clocked by the first clock arranged to re-sample the output of the sampling module;
- and
- wherein the analogue to digital converter is arranged to output a feedback signal upon finishing an analogue to digital conversion of a sample, said feedback signal being arranged to control the duty cycle.
3 more elements
A method of operating a circuit portion, comprising:
- clocking components in a clock domain with a first clock;
- clocking an analogue to digital converter with a second clock, the second clock having a duty cycle, the second clock being derived from the first clock;
- sampling an output of the analogue to digital converter using a sampling module clocked by the second clock;
- after said sampling, re-sampling an output of the sampling module with a re-sampling module clocked by the first clock;
- and
- outputting a feedback signal from the analogue to digital converter, upon finishing an analogue to digital conversion of a sample, to control the duty cycle.
3 more elements
Dependencies are inferred from the claim text.