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Amin Mirzaei naghlbari

Amin Mirzaei naghlbari

Academic rank: Associate Professor
ORCID: https://orcid.org/0000-0002-5120-6602
Education: PhD.
ScopusId: 36809806700
Faculty: Engineering
Address: Arak University
Phone:

Research

Title
DESIGN OF A SIGMA-DELTA MODULATOR WITH 14-BIT RESOLUTION FOR BIOMEDICAL APPLICATIONS
Type
JournalPaper
Keywords
Sigma-delta modulation, CDS technique, Comparator, Switched capacitor circuits, Analog-to-digital converter, Common mode feedback
Year
2019
Journal Scientific Bulletin, Series C: Electrical Engineering and Computer Science
DOI
Researchers Mahdi Rezvanyvardom ، Vahid Khalili ، Amin Mirzaei naghlbari

Abstract

This paper investigates a new second order, 14-bit resolution, 800nW power consumption sigma-delta modulator which is suitable for biomedical applications. The proposed modulator is designed in the sub-threshold region and used 0.18um TSMC CMOS technology. In this paper, the maximum value of saturation is achieved by using of the coefficients of second order modulator which is approximately 5-DBFS. Moreover, the CDS technique is used to eliminate the flicker noise. Also, the Nyquist-rate, the sampling frequency and the maximum SNDR of the proposed modulator are 100Hz, 12.8 KHz and 86dB, respectively. The proposed structure improves bandwidth frequency, oversampling frequency and time resolution of the sigma-delta modulator.