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US 12,627,310 B2Granted
AVS architecture for SAR ADC
AssigneeMarvel Asia Pte Ltd
InventorsBenjamin Tomas Reyes, Gabriele Minoia, Ray Luan Nguyen
Life of this patent
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Abstract
An Integrated Circuit (IC) includes one or more functional circuits of a given type, a test circuit including a selected one of the functional circuits or a replica circuit of the same type as the functional circuits, and an Adaptive Voltage Scaling (AVS) circuit. The AVS circuit is configured to determine a delay of the test circuit, and to adjust a supply voltage of the functional circuits in response to the determined delay of the test circuit.
Claims18
An Integrated Circuit (IC), comprising:
- one or more functional circuits of a given type;
- a test circuit, comprising a selected one of the functional circuits or a replica circuit of a same type as the functional circuits, the test circuit configured to generate a signal indicative of a delay of the test circuit;
- and
- an Adaptive Voltage Scaling (AVS) circuit comprising:
- a Time-to-Digital Conversion circuit (TDC), configured to convert a reference clock into a first digital value, and to convert the signal indicative of a delay of the test circuit into a second digital value;
- and
- logic, configured to adjust a supply voltage of the functional circuits based on a difference between the first digital value and the second digital value produced by the TDC.
4 more elements
An Adaptive Voltage Scaling (AVS) method, comprising:
- performing the following in an Integrated Circuit (IC) that includes (i) one or more functional circuits of a given type and (ii) a test circuit, comprising a selected one of the functional circuits or a replica circuit of a same type as the functional circuits, the test circuit configured to generate a signal indicative of a delay of the test circuit:
- converting a reference clock into a first digital value using a Time-to-Digital Conversion circuit (TDC);
- converting the signal indicative of the delay of the test circuit into a second digital value using the TDC;
- and
- adjusting a supply voltage of the functional circuits based on a difference between the first digital value and the second digital value produced by the TDC.
2 more elements
Dependencies are inferred from the claim text.