一种光感应检测电路
By combining PD circuits and pre-amp & filter circuits in the photosensitive detection circuit, the problems of high cost, poor accuracy and high manufacturing difficulty in the prior art are solved, realizing high integration and low cost photosensitive detection, which is suitable for optical signal transmission and communication devices.
CN115165092BActive Publication Date: 2026-07-17SHANGHAI ZHAOFU PRECISION ELECTRONIC INSTR CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI ZHAOFU PRECISION ELECTRONIC INSTR CO LTD
- Filing Date
- 2022-08-09
- Publication Date
- 2026-07-17
Smart Images
Figure CN115165092B_ABST
Abstract
本发明涉及一种光感应检测电路，包括依次电连接的PD电路、Pre‑amp&filter电路以及负载，PD电路用于检测光强度信息并转为电压信息，Pre‑amp&filter电路用于将转换为的电压信息放大且滤除噪声。本发明提供了一种能完全在集成电路内部实现的、而且可采用常规CMOS工艺制作的光感应检测电路，其中PD电路检测到强度变化的光信号并转化为相应变化的电压信号，该电压值经过Pre‑amp&filter电路放大且滤波，继而得到所需要的电压值。此电路可用于以光信号传输为主的通信装置中，提高了PCB板集成度，减少芯片外围元器件数目，降低成本，增强可靠性。
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