Amplifiers – With periodic switching input-output
Reexamination Certificate
2006-06-06
2006-06-06
Barnie, Rexford (Department: 2819)
Amplifiers
With periodic switching input-output
C327S552000, C327S553000, C327S554000, C333S017100, C333S172000, C333S173000, C333S174000
Reexamination Certificate
active
07057452
ABSTRACT:
A circuit for correcting the offset of an amplification and filtering chain having a predetermined gain and cut-off frequency depending on the value of at least one capacitor, comprising: a correction means for subtracting from the chain input a correction signal depending on the value of a programmable digital word; a digital automaton for, in a setting phase, searching, then memorizing one of two consecutive values of the digital word between which the output signal of the chain switches sign, the input signal being canceled during a setting phase; and comprising a means for, during the setting phase, reducing the value of said at least one capacitor with respect to its normal operating value.
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Ravatin Jean
Van Zanten François
Barnie Rexford
de Guzman Dennis M.
Jorgenson Lisa K.
Nguyen Khai
Seed IP Law Group PLLC
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