Coded data generation or conversion – Analog to or from digital conversion – Differential encoder and/or decoder
Reexamination Certificate
2006-06-06
2006-06-06
JeanPierre, Peguy (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Differential encoder and/or decoder
C341S155000
Reexamination Certificate
active
07057540
ABSTRACT:
A sigma-delta analog-to-digital converter-offers advantages such as noise shaping and high frequency operation. However, a sampling circuit needed to provide a highly oversampled discrete-time sample stream with low noise characteristics is difficult to design and implement. The present invention provides a sigma-delta mixer300with such a sampling circuit310. The present invention discloses a sampling circuit using switched capacitors307, 308, and309with low noise characteristics and at the same time is capable of providing a highly oversampled discrete-time sample stream.
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Chen Feng
Leipold Dirk
Muhammad Khurram
Staszewski Robert B.
Brady III Wade James
Jean-Pierre Peguy
Neerings Ronald O.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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