Sampling and level shifting circuit

Details Sampling and level shifting circuit Sampling and level shifting circuit

2007-01-23

2007-01-23

Tra, Quan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S094000

Reexamination Certificate

active

11043669

ABSTRACT:
A circuit comprising a first switch for sampling a differential signal and a second switch for level-shifting the sampled differential signal is disclosed. The first and second switches are cross-coupled to cancel a charge injected between the first and second switches and for linearizing the charge transfer; and a capacitor coupled is between the first and second switches. A circuit in accordance with the present invention adds an extra sampling switch to the sampling circuit and an extra charge-transfer switch in the level-shifting circuit. By cross-coupling these extra switches, the result is a cancellation of the charge-injection, and thus linearizing the charge transfer.

REFERENCES:
patent: 5821780 (1998-10-01), Hasegawa
patent: 6144232 (2000-11-01), Yukawa et al.
patent: 6215337 (2001-04-01), Bazarjani
patent: 6700417 (2004-03-01), Kawahito et al.
patent: 717416 (1996-06-01), None

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