A continuous time sigma delta modulator with operational floating integrator

Author

Ducu, Dragos ; Manolescu, Andrei

Author_Institution

Bucharest Romania, Bucharest, Romania

Volume

2

fYear

2012

fDate

15-17 Oct. 2012

Firstpage

463

Lastpage

466

Abstract

This paper presents a new circuit realization for current mode continuous time sigma delta modulator. In this sigma delta convertor for implementation of integrators in loop filter, operational floating conveyors are employed. The modulator is designed in 0.18μm TSMC CMOS technology and features low power consumption (<;3mW), low supply voltage (±1.8), and wide dynamic range (>;70db). The performance of the circuits was demonstrated using HSPICE at low voltage operation of ±1.8V.

Keywords

CMOS integrated circuits; conveyors; filters; sigma-delta modulation; HSPICE; TSMC CMOS technology; current mode continuous time sigma delta modulator; loop filter; low power consumption; operational floating conveyors; operational floating integrator; sigma delta convertor; size 0.18 mum; voltage -1.8 V; voltage 1.8 V; CMOS integrated circuits; CMOS technology; Converters; Inverters; Modulation; Sigma delta modulation; Transistors; Analog to digital convertor; Comparator; Current Conveyer; Operational Floating Conveyer; Sigma delta;

fLanguage

English

Publisher

ieee

Conference_Titel

Semiconductor Conference (CAS), 2012 International

Conference_Location

Sinaia

ISSN

1545-857X

Print_ISBN

978-1-4673-0737-6

Type

conf

DOI

10.1109/SMICND.2012.6400729

Filename

6400729