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US 2019/0268014 A1Published application
Sigma-delta converters and corresponding methods
AssigneeInfineon Technologies AG
InventorsMartin Pernull, Massimo Rigo, Herwig Wappis
Life of this patent
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Abstract
Sigma-delta converters having a sampling circuit are provided. The sampling circuit is actuated such that sampling times are at least partially random.
Claims20
A sigma-delta converter, comprising:
- a sampling circuit configured to sample an input signal,
- a sigma-delta modulator configured to process the sampled input signal and generate an output signal, and
- a sampling controller, configured to actuate the sampling circuit in order to sample the input signal at at least partially random sampling times.
A method for controlling a sigma-delta converter, comprising:
- generating at least one clock signal on based on a random value, and
- actuating the sigma-delta converter on based on the at least one clock signal such that sampling times of a sampling circuit of the sigma-delta converter are at least partially random.
A sigma-delta converter, comprising:
- a sampling circuit configured to sample an input signal,
- a sigma-delta modulator configured to process the sampled input signal and generate an output signal, and
- a sampling controller, configured to actuate the sampling circuit in order to sample the input signal at a randomly distributed sampling time within a predefined time period.
Dependencies are inferred from the claim text.