Title :
A CMOS micropower voltage-to-frequency converter for portable applications
Author :
Azcona, C. ; Calvo, B. ; Medrano, N. ; Celma, S. ; Valero, M.R.
Author_Institution :
Group of Electron. Design, Univ. of Zaragoza, Zaragoza, Spain
Abstract :
This paper presents a micropower 1.2-V 0.18-μm CMOS temperature-compensated voltage-to-frequency converter for portable applications. Results show that the proposed converter has a power consumption of 60 μW (15 nW in sleep mode) operating over a (0.0 - 1.0 V) input voltage range with two different selectable output ranges, 0 - 0.5 MHz and 0.5 - 1 MHz. It achieves a relative error below 3 %, a gain error below 3.6 % and a linearity error of 0.004 % (14 bits) over the whole frequency span.
Keywords :
CMOS integrated circuits; compensation; frequency convertors; power convertors; CMOS micropower voltage-to-frequency converter; CMOS temperature-compensated voltage-to-frequency converter; frequency 0 MHz to 0.5 MHz; frequency 0.5 MHz to 1 MHz; power 15 nW; power 60 muW; power consumption; size 0.18 mum; voltage 0.0 V to 1.0 V; voltage 1.2 V; CMOS integrated circuits; CMOS technology; Linearity; Power demand; Sensitivity; Transistors; Wireless sensor networks; CMOS mixed integrated circuits; Low-voltage low-power; Sensor interface; Smart sensors; Voltage-to-frequency converter; WSN;
Conference_Titel :
Ph.D. Research in Microelectronics and Electronics (PRIME), 2011 7th Conference on
Conference_Location :
Trento
Print_ISBN :
978-1-4244-9138-4
Electronic_ISBN :
978-1-4244-9136-0
DOI :
10.1109/PRIME.2011.5966237
