Importance

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Abstract

Embodiments of the present invention provide for reducing leakage associated with hold capacitors used in the processing of analog outputs from an image sensor. In some embodiments, a circuit configuration provides for load balancing of a hold capacitor associated with the image processor to prevent voltage droop across the storage capacitor. In certain embodiments, double sampling of the image sensor is provided for and two hold capacitors are configured to have balanced loads across each of the capacitor's terminals so as to prevent associated voltage droop. In embodiments of the present invention, a discharge mechanism associated with the hold capacitors is configured to only connect to the hold capacitor during discharge, in order to prevent leakage from the capacitor. In certain embodiments of the present invention, load balancing of the hold capacitors may be achieved by using symmetrical circuit design and circuit layout. Embodiments of the present invention may provide for minimum leakage of the hold capacitors and low noise operation of the image sensor.

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First Claim