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US 2023/0418238 A1Published application
Gated ring oscillator linearization
AssigneeTexas Instruments Incorporated
InventorsMarius MOE, Tarjei AABERGE, Bijit PATEL
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Abstract
Aspects of the disclosure provide for an apparatus comprising a time-to-digital converter (TDC) and a processor coupled to the TDC. In some examples, the TDC may be configured to receive a signal and generate a measurement result indicating a time between start and stop events of the signal. The processor may be configured to receive the measurement result, compare the measurement result to a target value, and determine a non-linearity model configured to correct a variance of the measurement result from the target value.
Claims20
An apparatus comprising:
- a phase detector comprising:
- a time-to-digital converter (TDC);
- and
- an output coupled to an output of the TDC;
- a processor coupled to the output of the phase detector;
- an error computation circuit coupled to the processor;
- and
- an oscillator coupled to the error computation circuit and to an input of the phase detector.
5 more elements
A method, comprising:
- receiving a calibration signal;
- measuring the calibration signal to provide a measurement result, the measurement result including variance from a target value;
- processing the measurement result to determine a non-linearity model, the non-linearity model defining the variance of the measurement result from the target value;
- receiving an operating mode signal;
- measuring the operating mode signal to provide a second measurement result, the second measurement result including variance from a target value;
- and
- processing the second measurement result according to the non-linearity model to compensate for the variance in the second measurement result from the target value.
4 more elements
Dependencies are inferred from the claim text.