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

fYear

1992

Firstpage

425

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1992., Proceedings of the 35th Midwest Symposium on

Conference_Location

Washington, DC

Print_ISBN

0-7803-0510-8

Type

conf

DOI

10.1109/MWSCAS.1992.271372

Filename

271372