A bit-oriented parallel A/D converter

Author

Acciani, G. ; Chiarantoni, E. ; Grimaldi, D. ; Vacca, F.

Author_Institution

Dept. of Electr. & Electron., Polytechnic of Bari, Spain

fYear

1993

fDate

16-18 Aug 1993

Firstpage

224

Abstract

In this paper, the electrical circuit scheme for the Bit-Oriented A/D converter compatible with most CMOS process technologies is proposed. In order to overcome the problems of CMOS resistances implementation, further current is used as a processing signal. The most important factors affecting conversion resolution and speed are discussed. It is pointed out that a 3-μm CMOS implementation of bit oriented A/D converter can achieve 8-bit resolution to maintain an absolute current error of half LSB. The bit-oriented converter can operate at a sampling rate of 8 MHz. The simple structure of the converter can give rise to other digital codes through variation of the reference voltages and current source connections

Keywords

CMOS integrated circuits; analogue-digital conversion; mixed analogue-digital integrated circuits; parallel architectures; 3 micron; 8 MHz; 8 bit; CMOS process technologies; absolute current error; bit-oriented parallel A/D converter; circuit speed; conversion resolution; current source connections; digital codes; electrical circuit scheme; reference voltages; Analog-digital conversion; CMOS process; CMOS technology; Circuits; Mirrors; Operational amplifiers; Resistors; Sampling methods; Signal resolution; Systems engineering and theory;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1993., Proceedings of the 36th Midwest Symposium on

Conference_Location

Detroit, MI

Print_ISBN

0-7803-1760-2

Type

conf

DOI

10.1109/MWSCAS.1993.343089

Filename

343089