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Low-flux and low-noise detection circuit having a readout circuit with shielded integration node
Low-flux and low-noise detection circuit having a readout circuit with shielded integration node
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机译:具有带屏蔽积分节点的读出电路的低通量和低噪声检测电路
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摘要
The detection circuit of the Source Follower per Detector type comprises a photodiode connected to an integration node. A biasing circuit makes it possible to bias the photodiode between a first reverse-bias state and a second floating state. A readout circuit is connected to the integration node for generating a signal representative of the scene observed by the photodiode. A metal shielding is arranged around the integration node. The metal shielding is connected to an output of the readout circuit configured to have a potential varying in the same direction as the potential at the integration node.
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