Coded data generation or conversion – Analog to or from digital conversion – Digital to analog conversion
Reexamination Certificate
2006-03-28
2006-03-28
Young, Brian (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Digital to analog conversion
Reexamination Certificate
active
07019677
ABSTRACT:
A current steering digital to analog converter includes a current source for selectively providing a selected amount of current to an output in response to input data. The current source includes a selected number of sub-current sources for selectively providing fractions of the selected amount of current to the output. Compensation current sources each provide a selected amount of compensation current to the output. Compensation control circuitry, in response to the input data, selectively activates and de-activates selected ones of the sub-current sources and the compensation current sources to provide current compensation at the output.
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Tiilikainen, Mika P., A 14-bit 1.8V 20-mW 1mm2 CMOS DAC, IEEE Journal of Solid State Circuits, vol. 36, No. 7, Jul. 2001, pp 1144-1147.
Marques et al., A 12b Accuracy 300MSample/s Update Rate CMOS DAC, ISSCC Dig. Technical Papers, Feb. 1998.
Vandenbussche et al., A 14b 150 MSample/s Update Rate Q2 Random Walk CMOS DAC, ISSC Dig. Technical Papers, Feb. 1999.
Datar Rajendra
Soman Manoj Shridhar
Subramoniam Krishnan
Cirrus Logic Inc.
Murphy James J.
Thompson & Knight LLP
Young Brian
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