Common-mode charge control in a pipelined charge-domain...

Details Common-mode charge control in a pipelined charge-domain... Common-mode charge control in a pipelined charge-domain...

2008-02-08

2009-08-18

Luu, An T (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Having specific delay in producing output waveform

C327S285000, C377S057000, C377S059000

Reexamination Certificate

active

07576586

ABSTRACT:
In a differential bucket-brigade device (BBD) pipeline it is necessary for proper circuit function to maintain the common-mode charge within an acceptable range at each pipeline stage. Embodiments of the present invention provide for reducing common-mode charge variations in a differential charge-domain pipeline. Common mode charge at a given stage of the pipeline is adjusted according to one or more measured characteristics, thereby controlling common mode charge variation throughout the differential charge-domain pipeline.

REFERENCES:
patent: 6222175 (2001-04-01), Krymski
patent: 6570516 (2003-05-01), Barker
patent: 6829311 (2004-12-01), Riley
Paul, S.A., et al., “A Nyquist-Rate Pipelined Oversampling A/D Converter,”IEEE Journal of Solid-State Circuits34(12):1777-1787 (Dec. 31, 1999).

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