A 0.75V continuous-time sigma-delta analog-to-digital converter in CMOS technology

Author

Essawy, A. ; Ismail, A. ; Dessouky, Mohamed

Author_Institution

ECE Dept., Ain Shams Univ., Cairo, Egypt

fYear

2014

fDate

2-4 April 2014

Firstpage

1

Lastpage

5

Abstract

In this work, a low-voltage implementation for continuous-time ΣΔ analog-to-digital converters is proposed. The low-voltage implementation technique is based on implementing the sigma delta integrators using CMOS inverters. The proposed technique is applied to a third-order single loop modulator. The first integrator in the loop filter is an active RC integrator, while the remaining integrators are Gm-C based. A 74 dB SNDR is achieved for a signal bandwidth of 41 kHz and sampling frequency of 100 MHz, while consuming 1 mA from 0.75 V supply, in 65 nm CMOS technology.

Keywords

CMOS integrated circuits; integrating circuits; low-power electronics; sigma-delta modulation; CMOS technology; active RC integrator; analog-digital converter; continuous time sigma-delta ADC; loop filter; low voltage implementation technique; size 65 nm; third-order single loop modulator; voltage 0.75 V; CMOS integrated circuits; CMOS technology; Inverters; Low voltage; Modulation; Sigma-delta modulation; Solid state circuits; continuous time; inverter-based; low voltage; sigma delta;

fLanguage

English

Publisher

ieee

Conference_Titel

Devices, Circuits and Systems (ICCDCS), 2014 International Caribbean Conference on

Conference_Location

Playa del Carmen

Print_ISBN

978-1-4799-4684-6

Type

conf

DOI

10.1109/ICCDCS.2014.7016164

Filename

7016164