A continuous-time incremental analog to digital converter

Author

Doldán, Ricardo ; Yúfera, Alberto ; Rueda, Adoración

Author_Institution

Instituto de Microelectron. de Sevilla, Seville Univ., Spain

fYear

2002

fDate

2002

Firstpage

62

Lastpage

67

Abstract

In this paper an incremental analog-to-digital converter (ADC), designed as part of the signal-conditioning circuitry for a tissue impedance measurement system, is presented. Continuous-time design techniques have been used for the development of a modified implementation of the conversion algorithm, with respect to its discrete-time counterpart. In order to reduce the influence of the nonidealities, analog and digital corrections have been also implemented. A first prototype in 0.8 μm CMOS technology has been fabricated and tested. Simulation and experimental results are reported.

Keywords

CMOS integrated circuits; analogue-digital conversion; biomedical measurement; circuit simulation; continuous time systems; integrated circuit design; integrated circuit measurement; integrated circuit modelling; operational amplifiers; 0.8 micron; 12 bit; CMOS continuous-time incremental ADC; OTA-C techniques; analog-to-digital converters; analog/digital correction nonideality reduction; continuous-time design techniques; discrete-time conversion; modified conversion algorithm implementation; tissue impedance measurement system signal-conditioning circuitry; Analog-digital conversion; Clocks; Counting circuits; Delta-sigma modulation; Digital control; Digital integrated circuits; Integrated circuit modeling; Signal processing; Signal processing algorithms; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Integrated Circuits and Systems Design, 2002. Proceedings. 15th Symposium on

Print_ISBN

0-7695-1807-9

Type

conf

DOI

10.1109/SBCCI.2002.1137638

Filename

1137638