Gain and offset diagnosis of analog-to-digital converters in sensor signal path
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
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Feb 4, 2025
Grant Date -
Jun 27, 2024
app pub date -
Dec 27, 2022
filing date -
Dec 27, 2022
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A sensor circuit, having a startup phase and an operation phase, includes: a sensor configured to generate a sensor signal based on a measured property, wherein the sensor signal has a frequency spectrum defined by a first frequency and a second frequency that is greater than the first frequency; a signal processing circuit including an analog-to-digital converter (ADC) configured to convert the sensor signal into a digital sensor signal; and an offset diagnosis circuit. The offset diagnosis circuit includes: a low pass filter having a cutoff frequency less than the first frequency and configured to generate a filtered signal based on the digital sensor signal; an offset register configured to store a startup signal value of the filtered signal during the startup phase; and an offset comparator circuit configured to set a threshold range based on the startup signal value for use during the operation phase.
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International Classification(s)
- 2022 Application Filing Year
- H03M Class
- 1388 Applications Filed
- 948 Patents Issued To-Date
- 68.30 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- H03M Class
- 0 % this patent is cited more than
- < 1 Age
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