Photoelectric analog-to-digital conversion chip integrated with silicon-based photoelectric detector

Abstract

The invention discloses a photoelectric analog-to-digital conversion chip integrated with a silicon-based photoelectric detector. The silicon-based photoelectric detector, a trans-impedance amplifierand an analog-to-digital converter are effectively integrated on one chip, thereby effectively combining environmental light detection, gesture recognition and approaching distance detection on the same chip through a Si standard process. Moreover, a current-to-voltage conversion amplifier circuit and an analog-to-digital conversion circuit are connected directly, thereby simplifying the assemblyprocess, ensuring the reliability of a system while reducing interconnection lines and the size of the system, improving the integration degree, promoting the miniaturization of equipment, enhancing the function of the chip, achieving the effect of multiple purposes with one chip, and lowering the cost to a certain extent. Thus, the chip can be widely applied to various small-sized portable electronic equipment.

Description

technical field [0001] The invention relates to a photoelectric analog-to-digital conversion chip, in particular to a photoelectric analog-to-digital conversion chip integrating ambient light detection, gesture recognition and approach distance detection. Background technique [0002] With the diversification and intelligent development of photoelectric sensors, ambient light sensors can detect changes in ambient light, which can be used for intelligent automatic adjustment of the brightness of electronic equipment display screens, distance sensors can detect the displacement of objects, and gesture sensors are used to detect And recognize the change of the gesture direction, which can be used for the touch screen function of smart devices such as mobile phones and tablets, and enhance the human-computer interaction. The detector functions of traditional photoelectric sensor chips are relatively discrete, and the chip has a single function. If multiple functions need to be r...

AI Technical Summary

Problems solved by technology

The detector functions of traditional photoelectric sensor chips are relatively discrete, and the chip has a single function. If multiple functions need to be realized, multiple chips are required for assembly, resulting in a large equipment footprint and complicated wiring.

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