Optical sensor with transimpedance amplifier connection
US10935639B2 · kind B2 · utility
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20Claims
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Assignee
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Key dates
| Filing date | Jan 18, 2019 |
| Grant date | Mar 2, 2021 |
| Priority date | — |
| Expiry date | Apr 19, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F30/225
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems and circuits directed to a time-of-flight measurement system are provided. More specifically, an illustrative optical sensor is disclosed to include a plurality of avalanche photodiodes, at least one of the plurality of avalanche photodiodes being in communication with amplifier common node through an impedance converter that is responsive to a control signal and selectively connects or disconnects the at least one avalanche photodiode from the common node based on the control signal. In an example, the impedance converter is also configured to preserve current generated from the at least one avalanche photodiode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.