Monolithic integrated digital-to-analog converter

Details Monolithic integrated digital-to-analog converter Monolithic integrated digital-to-analog converter

1987-07-16

1988-12-13

Shoop, Jr., William M.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

323317, H03M 174

Patent

active

047914068

ABSTRACT:
A monolithic integrated digital-to-analog converter makes use of rotating current-source control (dynamic element matching). After the conversion of a digital input signal into a code containing a sequence of first binary conditions corresponding to the numerical value of the input signal (so-called thermometer code), the bit switches of possibly same-sized current sources are rotatingly controlled in the sense of being selected, so that it becomes possible in the manufacture of the monolithic integrated digital-to-analog converters to balance out the manufacturing tolerances or process variations of the current sources.

REFERENCES:
patent: 3982172 (1976-09-01), van de Plassche
patent: 4225816 (1980-09-01), Schade
patent: 4703310 (1987-10-01), van de Plassche
"The Glitch-Free D/A Converter", Digital Processes, 5, 1979, pp. 133-140, by P. E. Danielsson.
"Dynamic Element Matching Puts Trimless Converters on Chip", Electronics, Jun. 16, 1983, pp. 130-134 by Rudy van de Plassche.
"Monolithic 14-Bit DAC with 85 dB S/N Ratio", Electronics Components and Applications, vol. 2, No. 4, Aug. 1980, pp. 235-241 by R. v.d. Plassche.

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