Design, fabrication, and testing of a 12-bit sigma-delta analog to digital converter

Author

Moonan, Daniel W. ; Fischer, Godi

Author_Institution

Dept. of Electr. Eng., Rhode Island Univ., Kingston, RI, USA

fYear

1992

Firstpage

1201

Abstract

A 12-b sigma-delta (Σ-Δ) analog-to-digital (A/D) converter has been designed and fabricated using a 2-μm CMOS double-poly process. The chip is part of a study in the design of mixed analog-digital circuits. A second-order Σ-Δ modulator using 1 b quantization and a subsequent moving average digital filter using no multiplies have been realized. Simulations were run to determine layout accuracy. The A/D converter occupies roughly 3/4 of a 2.22-mm×2.25-mm MOSIS tiny chip. The chip has been fabricated through MOSIS. Preliminary test results are reported

Keywords

CMOS integrated circuits; analogue-digital conversion; delta modulation; design for testability; digital filters; integrated circuit testing; 12 bit; 2 micron; CMOS double-poly process; MOSIS; design; fabrication; layout accuracy; mixed analog-digital circuits; moving average digital filter; second-order Σ-Δ modulator; sigma-delta analog to digital converter; switched capacitor; Analog-digital conversion; CMOS process; Delta-sigma modulation; Digital filters; Digital modulation; Fabrication; Low pass filters; Signal resolution; Signal to noise ratio; Testing;

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.1992.271056

Filename

271056