Which mechanism causes voltage drift in precision sample-and-hold circuits using MOSFET switches?

💡 Explanation

When the MOSFET switch turns off, capacitive feedthrough occurs because the gate-source capacitance allows a portion of the clock signal to couple onto the holding capacitor, altering the stored voltage. Therefore, voltage drift results, rather than EMI, resistor drift, or dielectric polarization, which involve different mechanisms.

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