Active and passive imaging readout circuit working at linear mode APD (Avalanche Photo Diode) array
A technology of APD array and linear mode, which is applied in photoelectric imaging, passive imaging readout circuit, and main field, and can solve the problems of incompatibility between active and passive imaging methods, etc.
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[0024] See figure 2 , The present invention is provided with a detector 1, a short circuit protection circuit 2, an integration circuit 4, an integration time control circuit 3, an active and passive mode switching circuit 5, a sample and hold circuit 6 and a row selection circuit 7. The output of the detector is connected to the input of the short-circuit protection circuit, the output of the short-circuit protection circuit is connected to the input of the integration circuit, the output of the integration time control circuit is connected to the input of the active and passive mode switching circuit, one of the active and passive mode switching circuits The output terminal is connected to the control signal terminal of the integral circuit, the other output terminal of the active and passive mode switching circuit is connected to the control signal terminal of the sample and hold circuit, the output terminal of the integral circuit is connected to the input terminal of the sa...
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