A 0.4-1.4V 24MHz fully integrated 33µW, 104ppm/V supply-independent oscillator for RFIDs

In RFID-tags with pulse-based UWB communication, accurate supply-independent low-power oscillators are required. The 24 MHz oscillator presented was realized in a 130 nm CMOS technology. It has an ultra-low supply voltage dependency of 104 ppm/V over a voltage range of 1.4 V to 0.4 V. This was achieved by the use of two nested ultra-low-power voltage regulators and a novel circuit technique based on the attraction of two oscillator frequencies. The mean power consumption is 33 µW over the 1 V voltage span. No external biasing and no trimming or calibration was used.

[1]  F. Ayazi,et al.  Process and temperature compensation in a 7-MHz CMOS clock oscillator , 2006, IEEE Journal of Solid-State Circuits.

[2]  W. Dehaene,et al.  A Flexible, Ultra-Low-Energy 35 pJ/Pulse Digital Back-End for a QAC IR-UWB Receiver , 2008, IEEE Journal of Solid-State Circuits.

[3]  Michael S. McCorquodale,et al.  A Monolithic and Self-Referenced RF LC Clock Generator Compliant With USB 2.0 , 2007, IEEE Journal of Solid-State Circuits.

[4]  Behzad Razavi,et al.  A study of phase noise in CMOS oscillators , 1996, IEEE J. Solid State Circuits.

[5]  Willy Sansen,et al.  analog design essentials , 2011 .

[6]  M. Steyaert,et al.  A fully integrated wireless power supply for pinless active RFID-devices in 130nm CMOS , 2007, 2007 IEEE Asian Solid-State Circuits Conference.

[7]  A. Olmos.  A temperature compensated fully trimmable on-chip IC oscillator , 2003, 16th Symposium on Integrated Circuits and Systems Design, 2003. SBCCI 2003. Proceedings..

[8]  Michiel Steyaert,et al.  A fully-integrated Wienbridge topology for ultra-low-power 86ppm/°C 65nm CMOS 6MHz clock reference with amplitude regulation , 2008, ESSCIRC 2008 - 34th European Solid-State Circuits Conference.

[9]  W. Dehaene,et al.  System Design for Ultra-Low-Power UWB-based Indoor Localization , 2007, 2007 IEEE International Conference on Ultra-Wideband.

[10]  Akinori Matsumoto,et al.  An on-chip CMOS relaxation oscillator with power averaging feedback using a reference proportional to supply voltage , 2009, 2009 IEEE International Solid-State Circuits Conference - Digest of Technical Papers.

[11]  W. Sansen.  Challenges in analog IC design submicron CMOS technologies , 1996, 1996 IEEE-CAS Region 8 Workshop on Analog and Mixed IC Design. Proceedings.