Charge transfer circuit suitable for common CMOS process and charge transfer control switch thereof
A charge transmission and control switch technology, applied in the direction of analog-to-digital converters, etc., can solve the problems of limiting speed and precision, and achieve the effect of precise charge addition and subtraction operations
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[0040] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0041] figure 1 Shown is a schematic diagram of the charge transport principle of the CCD device. The charge transfer process refers to the transfer of charges in the CCD potential well from one location to another. exist figure 1 In (A), it is assumed that a charge packet has been stored in the potential well under the second electrode, the voltage on this electrode is 10V, and the voltage on the other three electrodes is 2V (2V>Vth), then there are potentials under all electrodes Well, it's just that the potential well under the 10V electrode is much deeper than the potential well under the 2V electrode. figure 1 In (B), if the voltage under the third electrode is increased to 10V, the potential wells under the second and third electrodes will merge, and the charge packets under the second electrode will be distributed among the two po...
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