Switched capacitor equalizer with offset voltage cancelling

Details Switched capacitor equalizer with offset voltage cancelling Switched capacitor equalizer with offset voltage cancelling

2006-03-31

2010-02-02

Pascal, Robert (Department: 2817)

Amplifiers

With periodic switching input-output

Reexamination Certificate

active

07656226

ABSTRACT:
An embodiment may be described as a switched capacitor analog equalizer circuit with offset voltage cancellation, where an embodiment comprises an amplifier in which a feedback path from its output port to one of its input ports is provided during a reset phase, and where the amplifier's input port connected to the feedback path is also connected to one terminal of an offset-correction capacitor and one terminal of a sampling capacitor. The other terminal of the offset-correction capacitor is connected to a switch and the other terminal of the sampling capacitor is connected to an input port to receive a signal. During the reset phase, the switch is open, and during a sampling phase, the switch is closed so that the offset-correction capacitor and the sampling capacitor are connected in parallel. Other embodiments are described and claimed.

REFERENCES:
patent: 4607231 (1986-08-01), Nakayama
patent: 4768205 (1988-08-01), Nakayama
patent: 4835482 (1989-05-01), Tamakoshi et al.
patent: 4965711 (1990-10-01), Kamp et al.
patent: 5410270 (1995-04-01), Rybicki et al.
patent: 5457417 (1995-10-01), Guoliang et al.
patent: 5604458 (1997-02-01), Shou et al.
patent: 5739720 (1998-04-01), Lee
patent: 5760657 (1998-06-01), Johnson
patent: 5784320 (1998-07-01), Johnson
patent: 5923275 (1999-07-01), Kalb
patent: 5994939 (1999-11-01), Johnson et al.
patent: 6075476 (2000-06-01), Johnson et al.
patent: 6081162 (2000-06-01), Johnson
patent: 6144195 (2000-11-01), Afghahi et al.
patent: 6163582 (2000-12-01), Johnson
patent: 6166595 (2000-12-01), Moldsvar et al.
patent: 6184732 (2001-02-01), Johnson et al.
patent: 6194967 (2001-02-01), Johnson et al.
patent: 6208181 (2001-03-01), Johnson
patent: 6232757 (2001-05-01), Afghahi et al.
patent: 6232826 (2001-05-01), Afghani et al.
patent: 6249159 (2001-06-01), Johnson
patent: 6255873 (2001-07-01), Johnson et al.
patent: 6288666 (2001-09-01), Afghahi et al.
patent: 6310514 (2001-10-01), Johnson
patent: 6342848 (2002-01-01), Johnson et al.
patent: 6362666 (2002-03-01), Afghahi et al.
patent: 6417675 (2002-07-01), Johnson
patent: 6496046 (2002-12-01), Johnson
patent: 6498824 (2002-12-01), Johnson
patent: 6516672 (2003-02-01), Wang
patent: 6518806 (2003-02-01), Johnson
patent: 6535039 (2003-03-01), Nanba et al.
patent: 6545627 (2003-04-01), He et al.
patent: 6731688 (2004-05-01), Johnson
patent: 6946986 (2005-09-01), Gabillard et al.
patent: 7245321 (2007-07-01), Panicacci et al.
patent: 7302246 (2007-11-01), Tseng et al.
patent: RE40249 (2008-04-01), Cannata et al.
patent: 2002/0085655 (2002-07-01), Johnson
patent: 2005/0023460 (2005-02-01), Brown et al.
patent: 2005/0071706 (2005-03-01), Deshmane et al.
patent: 2005/0146385 (2005-07-01), Johnson et al.
patent: 2008/0231356 (2008-09-01), Querbach et al.

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