| 摘要 |
A track and hold circuit and a track and hold method are provided to prevent distortion of a sampled signal, and to reduce a variation of a channel charge injection and a channel conductance. In a track and hold circuit, a first level shifter generates a first signal. A first MOS(Metal Oxide Semi-conductor) transistor provides an output stage with a sampled signal, and samples the first signal in response to a clock signal. A hold capacitor is coupled to the output stage to maintain the sampled signal. A second level shifter performs a level shift of an analog input signal as a direct voltage having a second level, and provides a gate of the first MOS transistor with the analog input signal.
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