Coded data generation or conversion – Analog to or from digital conversion – Differential encoder and/or decoder
Reexamination Certificate
2006-10-31
2006-10-31
JeanPierre, Peguy (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Differential encoder and/or decoder
C341S120000
Reexamination Certificate
active
07129875
ABSTRACT:
An analog-to-digital (A/D) converter system is provided that compensates for operating variations associated with one or more passive components of the A/D converter. In one aspect of the present invention, the A/D converter system comprises a sigma delta modulator having at least one passive component and a feedback path that includes at least one switched digital-to-analog converter (DAC), and a tracking reference generator that provides compensated reference signals to the at least one switched DAC for providing feedback to the sigma delta modulator. The compensated reference signals include inverse variations that cancel operating variations associated with the at least one passive component.
REFERENCES:
patent: 6011501 (2000-01-01), Gong et al.
patent: 6040793 (2000-03-01), Ferguson, Jr. et al.
patent: 6201835 (2001-03-01), Wang
patent: 2005/0116850 (2005-06-01), Nelson
patent: 2005/0123072 (2005-06-01), Guimaraes
patent: 2005/0206543 (2005-09-01), Draxelmayr
Un-Ku Moon, et al.: “A Switched-Capacitor Dac with Analog Mismatch Correction”; Dept. of Electrical and Computer Engineering, Owen Hall, Oregon State University, Corvallis, OR 97331-3211, USA, no date.
“Demystifying Sigma-Delta ADCs”; Dallas Semiconductor Maxim; http://www.maxim-ic.com/appnotes.cfm/appnote—number 1870; pp. 1-13, no date.
Altun Oguz
Gomez Gabriel J.
Haroun Baher S.
Rentala Vijaya B.
Brady W. James
Jean-Pierre Peguy
Shaw Steven A.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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