Title :
A low-power high-sensitivity CMOS voltage-to-frequency converter
Author :
Calvo, B. ; Medrano, N. ; Celma, S. ; Sanz, M.T.
Author_Institution :
Group of Electron. Design-I3A, Univ. of Zaragoza, Zaragoza, Spain
Abstract :
This paper presents a low-cost high-speed CMOS voltage-to-frequency converter (VFC) which targets front-end sensor interfacing in wireless sensor networks applications. The proposed VFC, designed in a 0.35 mum CMOS technology supplied at 3 V, is very simple, obtaining at the same time high performance characteristics: it operates with a power consumption below 1.03 mW at output frequencies ranging from 1.198 MHz to 2.186 MHz given a 1.0-2.0 V input (1 MHz/V sensitivity) with an accuracy better than 1%.
Keywords :
CMOS integrated circuits; intelligent sensors; low-power electronics; radiofrequency integrated circuits; voltage-frequency convertors; wireless sensor networks; CMOS voltage-to-frequency converter; frequency 1.198 MHz to 2.186 MHz; front-end sensor; low-power high-sensitivity CMOS VFC; size 0.35 mum; smart sensor; voltage 1 V to 2 V; voltage 3 V; wireless sensor network; CMOS technology; Circuits; Consumer electronics; Frequency conversion; Intelligent sensors; Microcontrollers; Sensor arrays; Sensor systems; Voltage; Wireless sensor networks; WSN; low-voltage low-power CMOS design; quasi-digital sensors; smart sensors; voltage-to-frequency converter;
Conference_Titel :
Circuits and Systems, 2009. MWSCAS '09. 52nd IEEE International Midwest Symposium on
Conference_Location :
Cancun
Print_ISBN :
978-1-4244-4479-3
Electronic_ISBN :
1548-3746
DOI :
10.1109/MWSCAS.2009.5236139
