Asynchronous delta-sigma modulator with multiple-valued output

Author

Mannan, A.A. ; Tamura, H. ; Tanno, Keita

Author_Institution

Dept. of Electr. & Electron. Eng., Univ. of Miyazaki, Miyazaki, Japan

fYear

2013

fDate

7-8 Oct. 2013

Firstpage

432

Lastpage

437

Abstract

In this paper, a continuous-time asynchronous delta-sigma (ΔΣ) modulator (ADSM) is proposed. The proposed circuit is multiple-valued output. The circuit is consists of hysteresis comparator, operational transconductance amplifier, and digital-to-analog circuits. Next, an example circuit of 5-level ADSM is discussed and simulated. An analog-to-digital converter consisted of the 5-level ADMS and multiple-valued logic decoder and digital counter is presented and simulated. All of the proposed circuits are simulated in transistors level through HSPICE with set of 2.0μm CMOS process parameters. Detailed simulation results are shown in this paper.

Keywords

CMOS integrated circuits; asynchronous circuits; delta-sigma modulation; multivalued logic; operational amplifiers; ADSM; CMOS process parameter; HSPICE; analog-digital converter; asynchronous delta-sigma modulator; continuous time delta-sigma modulator; digital counter; digital-analog circuits; hysteresis comparator; multiple valued logic decoder; multiple valued output; operational transconductance amplifier; size 2 mum; analog-to-digital converter; asynchronous; delta-sigma modulator; multiple-valued logic; time-continuous;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Technology and Electrical Engineering (ICITEE), 2013 International Conference on

Conference_Location

Yogyakarta

Print_ISBN

978-1-4799-0423-5

Type

conf

DOI

10.1109/ICITEED.2013.6676281

Filename

6676281