Over-voltage tolerant level detection circuit
US9018982B2 · kind B2 · utility
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7References
22Claims
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Key dates
| Filing date | Mar 7, 2012 |
| Grant date | Apr 28, 2015 |
| Priority date | — |
| Expiry date | May 5, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/16519
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This document discusses, among other things, apparatus and methods for a detection circuit. In an example, the detection circuit can include a voltage divider configured to receive a first supply voltage from an external device coupled to the detection circuit, first and second transistors configured to receive a control voltage from the voltage divider and to couple an output to ground when the control voltage exceeds a first threshold, and a bias circuit configured to bias the first transistor to set the first threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.