Title :
A very small sub-binary radix DAC for static pseudo-analog high-precision memory
Author :
Bliss, William G. ; Seaberg, C. Eric ; Geiger, Randall L.
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
Abstract :
A sub-binary radix digital-to-analog converter (DAC) which achieves high effective resolution in a small VLSI area is demonstrated and is shown to be especially well suited for certain static analog memory applications, including tunable analog circuits. An intentional sub-binary radix is used to create a redundant number system with radix less than two, while still using normal binary coefficients (on/off control). A current mode DAC with greater than ten bits effective resolution is implemented in only 41 mil2 area in a 2 μ CMOS technology. A simple iterative algorithm to control (set) these nonlinear and nonmonotonic DACs is detailed
Keywords :
CMOS integrated circuits; analogue storage; digital-analogue conversion; linear integrated circuits; 2 micron; CMOS technology; current mode DAC; high effective resolution; iterative algorithm; redundant number system; small VLSI area; small sub-binary radix DAC; static pseudo-analog high-precision memory; tunable analog circuits; Analog circuits; Analog memory; CMOS technology; Circuit optimization; Control systems; Integrated circuit yield; Iterative algorithms; Nonlinear filters; Tunable circuits and devices; Very large scale integration;
Conference_Titel :
Circuits and Systems, 1992., Proceedings of the 35th Midwest Symposium on
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-0510-8
DOI :
10.1109/MWSCAS.1992.271372
