Patent ID: 11863165
Assignee: ANALOG DEVICES, INC.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. A circuit, comprising:
a ground node and a supply node, wherein the supply node is at a supply voltage with respect to the ground node;
a sampling switch to receive a voltage input signal and a gate voltage;
a bootstrapped voltage generator comprising a positive feedback loop, wherein:
the positive feedback loop is activated by a clock signal to generate the gate voltage for turning on the sampling switch; and
the positive feedback loop comprises:
an output transistor to output the gate voltage of the sampling switch;
an input transistor to receive the voltage input signal and the gate voltage; and
a capacitor having a first plate coupled to a source of the output transistor and a second plate coupled to a drain of the input transistor, wherein the capacitor is to be charged at the supply voltage in a first phase, and no capacitor couples the drain of the input transistor to the ground node; and
a jump start circuit to turn on the output transistor by decreasing a gate voltage of a gate of the output transistor toward a ground node voltage for a limited period of time during a startup of the positive feedback loop and to cease the decreasing the gate voltage before the gate voltage reaches the ground node voltage.