电压控制电路
By using a voltage control circuit with SPAD and quenching resistor, the problems of low sensitivity and integration in optical signal triggering switches are solved, achieving high sensitivity, high precision and high integration of optical signal detection. It is suitable for a wide range of optical frequencies and has good stability in optical signal triggering switches.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SEMICON MFG INT (BEIJING) CORP
- Filing Date
- 2022-10-31
- Publication Date
- 2026-07-17
AI Technical Summary
In existing optical signal triggered switches, photoresistors have low sensitivity and integration, making it difficult to meet the requirements of low control complexity, low cost, reliability, and high frequency range.
A voltage control circuit is formed by using a single-photon avalanche diode (SPAD) and a quenching resistor. The SPAD breaks down and conducts when triggered by an optical signal, and the quenching resistor reduces the voltage drop after conduction to disconnect the circuit, thus realizing an optical signal triggered switch.
It improves the sensitivity and integration of optical signal trigger switches, adapts to a wide range of optical frequencies, and features high sensitivity, accuracy, integration and stability. It is suitable for operating conditions from -40 degrees Celsius to 125 degrees Celsius.
Smart Images
Figure CN117991856B_ABST