Ambient light sensor and method

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11713998
APP PUB NO 20220373388A1
SERIAL NO

17663915

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Abstract

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According to one aspect, an ambient-light sensor includes a photodiode configured to generate an electrical signal according to an ambient light, a capacitive-feedback transimpedance amplifier connected at its input to the photodiode for receiving a signal generated by the photodiode and for generating as an output an amplified signal from the signal generated by the photodiode, and an auto-zero switch at the input of the capacitive-feedback transimpedance amplifier. The ambient-light sensor further includes a control circuit including a bootstrap circuit configured to receive an initial positive- or zero-voltage logic control signal, and then generate, from this initial logic control signal, an adapted logic control signal having a first positive voltage level and a second negative voltage control level for controlling the auto-zero switch.

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Patent Owner(s)

  • STMICROELECTRONICS INTERNATIONAL N.V.; STMICROELECTRONICS (GRENOBLE 2) SAS

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gupta, Sri Ram Noida, IN 7 7
Kushwaha, Sarika Noida, IN 1 1
Moeneclaey, Nicolas Vourey, FR 23 25

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