Title :
A CMOS voltage-to-frequency converter with output frequency range programmability
Author :
Azcona, C. ; Calvo, B. ; Medrano, N. ; Celma, S. ; Aznar, F.
Author_Institution :
Group of Electron. Design - I3A, Univ. of Zaragoza, Zaragoza, Spain
Abstract :
This paper represents the design of a low-cost programmable CMOS voltage-to-frequency converter suitable for wireless sensor nodes signal conditioning. Designed in a 0.18μm CMOS technology supplied at 1.8V, it operates for a 0.0-1.6V input voltage with power consumption below 0.41mW. Three different output frequency ranges can be digitally selected: 0.0 to 0.5MHz, 0.0 to 1MHz or 0.0 to 1.5MHz. The accuracy achieved is better than 3%, with linearity errors below 0.04%.
Keywords :
CMOS integrated circuits; integrated circuit design; voltage-frequency convertors; CMOS voltage-to-frequency converter; output frequency range programmability; size 0.18 mum; voltage 1.8 V; wireless sensor nodes signal conditioning; Analog-digital conversion; CMOS technology; Capacitors; Circuits; Digital-to-frequency converters; Frequency conversion; Intelligent sensors; Microcontrollers; Signal design; Voltage;
Conference_Titel :
Circuits and Systems (MWSCAS), 2010 53rd IEEE International Midwest Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-7771-5
DOI :
10.1109/MWSCAS.2010.5548805
