Method and device for determining a digital value indicative of a physical quantity to be measured
AssigneeMelexis Technologies SA
InventorsCesare GHEZZI, Lionel TOMBEZ
Life of this patent
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Abstract
A method of providing a digital value indicative of a physical quantity to be measured by a sensor circuit or a bridge circuit that has two excitation nodes and at least one output node, comprises the steps of: a) applying a time-varying biasing signal to the excitation nodes, causing at least one output-node to provide a time-varying output signal; b) determining a first time value or a first count value or a first index related to a first event at which the first output signal passes a first threshold signal; c) providing a digital value indicative of the physical quantity to be measured based on said at least one time value or count value or index value.
Claims15
A method of providing a digital value indicative of a physical quantity to be measured by a sensor circuit or a bridge circuit that has two excitation nodes and at least one output node, the method comprising the steps of:
- a) applying a time-varying biasing signal with a predefined or a configurable waveform to the excitation nodes, causing the at least one output node to provide at least one time-varying output signal;
- b) using at least one threshold signal having a predefined value or a configurable value or a predefined or a configurable waveform;
- c) determining at least one time value or at least one count value or at least one index value related to a first event at which the at least one output signal passes at least one threshold signal;
- d) determining a digital value indicative of the physical quantity to be measured based on said at least one time value or count value or index value.
Dependencies are inferred from the claim text.