Patent ID: 11894670
Assignee: RAYTHEON COMPANY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. An apparatus comprising:
a photodetector configured to generate an electrical current based on received illumination;
an integration capacitor configured to integrate the electrical current and generate an integrator voltage;
an amplifier configured to control a transistor switch coupled in series between the photodetector and the integration capacitor;
an event detector configured to sense a high-energy event affecting the photodetector;
a switchable clamp coupled across inputs of the amplifier, the event detector configured to close the switchable clamp in response to sensing the high-energy event; and
a de-bias protection diode coupled to an output of the amplifier and to a gate of the transistor switch, the de-bias protection diode configured to limit a skew of a signal generated by the amplifier for the gate of the transistor switch.