Title :
A fully-integrated Wienbridge topology for ultra-low-power 86ppm/°C 65nm CMOS 6MHz clock reference with amplitude regulation
Author :
Smedt, Valentijn De ; Wit, Pieter De ; Vereecken, Wim ; Steyaert, Michiel
Author_Institution :
Dept. Elektrotechniek, Katholieke Univ. Leuven, Heverlee
Abstract :
Fully integrated Systems-On-Chip demand very accurate, low power, temperature independent clock references. In this paper, an improved Wienbridge topology is presented, meeting the specifications of this problem. Measurements show a temperature dependence of 86 ppm/degC and absolute accuracy of 0:9% at an oscillation frequency of 6 MHz. The circuit consumes 66 muW and is realized in a 65 nm technology measuring 150 mum by 200 mum. A remarkable similarity between simulation and measurement results has been observed.
Keywords :
CMOS integrated circuits; clocks; system-on-chip; Systems-On-Chip; amplitude regulation; frequency 6 MHz; fully-integrated Wienbridge topology; size 65 nm; ultra-low-power CMOS clock reference; Circuit topology; Clocks; Feedback; Frequency; Impedance; Integrated circuit measurements; Oscillators; Resistors; Semiconductor device measurement; Temperature dependence;
Conference_Titel :
Solid-State Circuits Conference, 2008. ESSCIRC 2008. 34th European
Conference_Location :
Edinburgh
Print_ISBN :
978-1-4244-2361-3
Electronic_ISBN :
1930-8833
DOI :
10.1109/ESSCIRC.2008.4681875