An anti-eclipse circuit for use in an imager includes a differential amplifier and a feedback circuit. The differential amplifier is coupled to an output line for receiving an output signal associated with the voltage level of a floating diffusion region in a pixel of the imager and configured to detect when a reset signal received from the pixel drops below a predetermined level. The feedback circuit is configured to increase the reset signal when the output signal is lower than the clamp voltage, thereby keeping the reset signal at the constant level.
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