Low noise analog sampling circuit and a method for low noise...

Details Low noise analog sampling circuit and a method for low noise... Low noise analog sampling circuit and a method for low noise...

2007-10-24

2009-11-03

Nguyen, Long (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S091000, C341S122000

Reexamination Certificate

active

07612586

ABSTRACT:
A low noise analog sampling circuit that includes a transistor connected to a first feedback loop and to a second feedback loop. During a second operational phase the second feedback loop provides the transistor a feedback signal that is responsive to an amplified error signal; wherein the error signal represents a difference between (i) a sampled signal representative of a state of the transistor short period before a first feedback loop was opened and (ii) a signal representative of a current state of the transistor; wherein at an end of the second operational phase the second feedback loop is opened and introduces a second noise that is attenuated by multiple capacitors.

REFERENCES:
patent: 5479121 (1995-12-01), Shen et al.
patent: 2007/0035335 (2007-02-01), Lee

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