Bootstrapped switch with an input dynamic range greater than...

Details Bootstrapped switch with an input dynamic range greater than... Bootstrapped switch with an input dynamic range greater than...

2007-02-13

2007-02-13

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Gating

Signal transmission integrity or spurious noise override

C327S536000

Reexamination Certificate

active

11168035

ABSTRACT:
A bootstrapping circuit capable of sampling inputs beyond a supply voltage which includes a bootstrapped switch coupled between an input node and an output node, a first transistor having a first end coupled to a control node of the bootstrapped switch, a first capacitor having a first end coupled to a second end of the first transistor, a second transistor coupled between the first end of the first transistor and a supply node, and having a control node coupled to a first clock signal node, a third transistor coupled between the second end of the first transistor and the supply node, a charge pump having an output coupled to a control node of the third transistor, a level shifter having an output coupled to a second end of the first capacitor, a fourth transistor cross-coupled with, the first transistor, a fifth transistor having a second end coupled to the first end of the fourth transistor, and having a control node coupled to the output of the level shifter, and a sixth transistor coupled between the first end of the fifth transistor and a common node and having a control node coupled to the first clock signal node.

REFERENCES:
patent: 6559707 (2003-05-01), Hwang

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