Anything related to sample and hold (S/H) circuits. S/H circuits are analog circuits whose purpose is that of sampling the instantaneous value of an analog signal and store that value for a predefined period of time. They are sort of analog memory circuits, and they are often employed as the first stage of analog to digital converter systems.

Anything related to sample and hold (S/H) circuits.

S/Hs are analog circuits whose purpose is that of sampling the instantaneous value of an analog signal and store that value for a predefined period of time. They are sort of analog memory circuits, and they are often employed as the first stage of analog to digital converter systems.

Usually a capacitor is used as an analog memory element in S/Hs to store a voltage level. Additional buffering circuitry and analog electronic switches are used to connect the capacitor either to the source signal (sampling phase) or to the load (holding phase) with suitable timing.

See also Wikipedia on sample and hold circuits.