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Avalanche Photodiode Bias Supply Circuit

種類 回路図規格 IEEE Std 315 / ANSI Y32.2エンジン schematex-circuit更新日 2026/5/27
Avalanche Photodiode Bias Supply Circuit
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You need a stable high-voltage bias for an avalanche photodiode in a light detection system. The circuit must limit current, filter noise, and provide a sense point for photocurrent monitoring.

この図に含まれるもの

図の背後にある意思決定を読み解く。

01

Use a 200V source with a 100k current-limiting resistor to protect the APD from overcurrent

02

Add a 1k sense resistor from anode to ground to convert photocurrent to a measurable voltage

03

Place a 10n capacitor across the APD to shunt high-frequency noise

Reusable for any reverse-biased APD application, including LIDAR receivers, photon counting, and optical communication front-ends.

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