Device and method for holding sampling
A sample-and-hold, sample-and-hold technology, applied in instruments, static memory, analog-to-digital converters, etc., can solve the problems of high cost and difficulty of operational amplifiers, and achieve the effects of low magnification, improved reliability, and high gain
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[0036] Please refer to figure 2, the entire sample-and-hold device is divided into two parts: the first-stage sample-and-hold circuit and the second-stage sample-and-hold circuit. The first-stage sampling and holding circuit and the second-stage sampling and holding circuit are controlled by the timing control circuit, so that the sampling phase of the first-stage sampling and holding circuit corresponds to the holding phase of the second-stage sampling and holding circuit, and the first-stage sampling and holding circuit The holding phase corresponds to the sampling phase of the second-stage sampling and holding circuit, so that the two work together. When the first-stage sample-and-hold circuit is in the sampling phase, its positive and negative output terminals are short-circuited (does not affect sampling), and the second-stage sample-and-hold circuit enters the hold phase at the same time. When the first-stage sample-and-hold circuit is in the hold phase, the second-sta...
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