Patent ID: 6310565
Filing Date: 2001-10-30
Classification: G11C,H03K

Abstract:
A sampling device for sampling an input signal in response to a sample signal, the sampling device comprising:a sampling transistor for creating samples of the input signal in response to the sample signal, the sampling transistor having a gate to source voltage, a threshold voltage, and, an on impedance corresponding with the difference between the gate to source voltage and the threshold voltage; anda control device for controlling the sampling transistor by generating a control signal in response to the sample signal, the control device comprising:a bootstrap reference voltage source for providing a reference voltage in response to the sample signal; anda control circuit for generating a control circuit voltage in response to the sample signal, the control circuit voltage comprising the sum of the input signal and the threshold voltage, the control signal comprising the sum of control circuit voltage and the reference voltage, and the gate to source voltage comprising the difference between the control signal and the input signal.