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Precision infinite sample and hold circuit

Question asked by fractal on Jul 26, 2016
Latest reply on Aug 19, 2016 by jcolao

Is it possible to couple some AD ADC directly to DAC without using microcontrollers or logic ICs? The goal is to make a single channel infinite sample and hold circuit with high resolution (at least 16 bits, preferably 18 or 20 bits). It should be able to sample a common-mode voltage in the range from -0.1V to +0.1V and reproduce it with no more than 100 uV error (preferably 10 uV). Found similar solution where 14-bit components were used, but don`t know how to select suitable ADC-DAC pair with higher resolution that will do the trick. Should I look for some specific features or just mindlessly read datasheets?

 

Thanks in advance.

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