Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Runar Soeraasen0
Date of Patent
January 23, 2007
Patent Application Number
11043669
Date Filed
January 25, 2005
Patent Primary Examiner
Patent 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.
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