CIRCUIT FOR NONNDESTRUCTIVELY SENSING MOVABLE CHARGE IN CHARGE COUPLED DEVICE

摘要

The detection circuit is used for non-destructive detection of a swing charge, in a charge-coupled storage device, having a storage body carrying a dielectric layer with storage electrodes and transfer gates. It includes a gate, a clock source and a capacitive detector, which is connected to one of the storage electrodes. The gate allows a voltage source to be connected to this storage electrode for a given interval, to form a floating electrode, with the clock source used to then connect a voltage to the transfer gate immediately preceding this electrode. Within the time frame defines by the clock source the previously received voltage from the preceding storage electrode is negated via the charge beneath the selected storage electrode.