Title :
A novel rail-to-rail differential voltage-to-frequency converter for portable sensing systems
Author :
Azcona, C. ; Calvo, B. ; Celma, S. ; Medrano, N.
Author_Institution :
Group of Electron. Design, Univ. of Zaragoza, Zaragoza, Spain
Abstract :
This paper presents a new high performance 1.2 V - 0.18 μm CMOS differential voltage-to-frequency converter (dVFC). The proposed dVFC works properly over the whole differential common mode input providing an output frequency range of 0.0 - 0.9 MHz with 0.015% linearity error for a -40 to 120°C temperature range and a 30% supply voltage variation. Power consumption is below 65 μW, which makes it suitable to be used in portable applications.
Keywords :
CMOS digital integrated circuits; electric sensing devices; voltage-frequency convertors; dVFC; frequency 0.0 MHz to 0.9 MHz; high-performance CMOS differential voltage-to-frequency converter; linearity error; portable sensing systems; rail-to-rail differential voltage-to-frequency converter; size 0.18 mum; temperature -40 degC to 120 degC; voltage 1.2 V; CMOS integrated circuits; Linearity; Power demand; Resistors; Temperature distribution; Transistors; Voltage control;
Conference_Titel :
Circuits and Systems (ISCAS), 2012 IEEE International Symposium on
Conference_Location :
Seoul
Print_ISBN :
978-1-4673-0218-0
DOI :
10.1109/ISCAS.2012.6271667
