In this Chapter sample-and-hold amplifiers are discussed. In most cases practical implementations of these amplifiers are track-and-hold amplifiers. During the sampling mode the input signal is “tracked” and a sample is taken at the moment the system is switched into the hold mode. A sample-and-hold amplifier samples the analog input signal during a short time and then holds the signal during the full clock period giving the analog-to-digital converter about twice the time to perform the conversion as in the case of a track-and-hold amplifier.
KeywordsClock Signal Track Mode Circuit Implementation Input Amplifier Sampling Clock
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