Title :
A design strategy for low-voltage low-power continuous-time ΣΔ A/D converters
Author :
Gerfers, Friedel ; Manoli, Yiannos
Author_Institution :
Inst. of Microelectron., Saarlandes Univ., Saarbrucken, Germany
Abstract :
This paper presents a design strategy for low-voltage low-power ΣΔ analog-to-digital (A/D) converter using a continuous-time (CT) lowpass loop filter. An improved method is used to find the optimal ΣΔ modulator implementation with respect to a minimal power consumption on the one hand and to fulfil a rapid prototyping approach on the other hand. The influence of the low supply voltage as well as circuit nonidealities on the overall ΣΔ modulator is determined and verified by behavioral simulations. Transistor-level simulation results of a 1.5 V CT ΣΔ A/D converter show a 75 dB dynamic range in a bandwidth of 25 kHz
Keywords :
CMOS integrated circuits; circuit CAD; continuous time filters; integrated circuit design; low-power electronics; mixed analogue-digital integrated circuits; rapid prototyping (industrial); sigma-delta modulation; 1.5 V; 25 kHz; LV ΣΔ A/D converters; analog-to-digital converter; behavioral simulations; circuit nonidealities; continuous-time ΣΔ ADCs; continuous-time lowpass loop filter; design strategy; low-power ADC; low-voltage ADC; minimal power consumption; optimal ΣΔ modulator implementation; rapid prototyping approach; Analog-digital conversion; Bandwidth; Batteries; Circuit simulation; Dynamic range; Energy consumption; Filters; Low voltage; Medical simulation; Prototypes;
Conference_Titel :
Design, Automation and Test in Europe, 2001. Conference and Exhibition 2001. Proceedings
Conference_Location :
Munich
Print_ISBN :
0-7695-0993-2
DOI :
10.1109/DATE.2001.915050
