Sampling rate and holding accuracy are two most concerned targets in designing the sample-and-hold circuit.

采样速度和保持精度，是采样保持电路设计制作者最为关注的两项指标。

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The circuit is divided into full bridge module, charge sense amplifier module, correlated double sampling and holding module, closed-loop feedback module, low-pass filter and time controlling module.

检测电路分为全桥平衡模块、电荷放大器模块、信号放大模块、相关双采样模块、采样保持模块、闭环反馈模块、低通滤波模块和数字时序控制模块。

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