A 0.5 V Track-and-Hold (T/H) Circuit
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The ability to track and then sample an analog signal is an essential function in many signal acquisition interfaces. In such interfaces, analog waveforms need to be sampled and held to within the accuracy of the system, prior to quantization by either sequential or parallel means. In pipelined A/D converters, e.g. in , the input signal sample has to be held constant over the duration of each step in the A/D operation. As such, track-and-hold (T/H) circuits are regularly used in an analog-todigital (A/D) converter.
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