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Применить Всего найдено 2. Отображено 2.
11-04-2023 дата публикации

Successive approximation type analog-to-digital conversion method and circuit based on charge stacking

Номер: CN115955243A
Принадлежит:

The invention provides a successive approximation analog-to-digital conversion method based on charge stacking. The successive approximation analog-to-digital conversion method comprises the following steps: acquiring an analog current of a storage and calculation integrated circuit; the cascode current mirror copies the analog current to the capacitor array of each digital-to-analog converter to obtain the sampling current of the N digital-to-analog converters; the SW1 switch is always in a closed state, and the N highest-order capacitors are controlled to be stacked; the SW2 switch is closed, the sampling current is sampled on the capacitor array to obtain N sampling voltages, the sampling voltages of the N digital-to-analog converters are subjected to analog signal stacking, and the sampling voltage of the first digital-to-analog converter is the weighted sum of the N sampling voltages; the SW2 switch is switched off, the capacitor arrays in the first digital-to-analog converter are ...

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02-06-2023 дата публикации

Charge pump with controllable output voltage, control method thereof and electronic equipment

Номер: CN116207979A
Принадлежит:

The invention discloses a charge pump with controllable output voltage, a control method thereof and electronic equipment, relates to the technical field of charge pumps, and aims to solve the problems of low voltage conversion efficiency and uncontrollable output voltage of an existing charge pump. The charge pump with the controllable output voltage comprises a plurality of stages of charge pump modules and output modules which are connected end to end. All stages of charge pump modules are sequentially connected end to end, and the output end of the last stage of charge pump module is electrically connected with the input end of the output module. And when the charge pump is in a programming mode, each stage of charge pump module determines the corresponding target threshold voltage by changing the threshold voltage corresponding to the charge pump module under the action of the corresponding control voltage. And when the charge pump is in the working mode, determining the output voltage ...

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