Charged-coupled device with diode cut-off input

Details Charged-coupled device with diode cut-off input Charged-coupled device with diode cut-off input

G - Physics

11

C

352/82.21

G11C 19/28 (2006.01) G11C 27/04 (2006.01)

Patent

CA 1291567

ABSTRACT: Semiconductor device. The invention relates to a CCD having a so-called diode cut-off input, a reference voltage being applied to the input diode and the input signal being supplied to an input gate located in front of the first clock electrode. Especially if the electrodes are composed of a transfer part and a storage part with an incorporated potential dif- ference, it is possible that incomplete charge transport occurs from the input to the first clock electrode. In or- der to avoid this incomplete charge transport and/or to be able to enlarge the dynamic range of the input signal, a larger clock voltage, for example 10 V, is applied to the first clock electrode than to the following clock elec- trodes, for example 5 V. In a preferred embodiment, the 5 V clock voltage can be supplied for this purpose via a boots- trap circuit of the first clock electrode. Fig. 3,4.

533696

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