Abstract
This paper describes a monolithic CMOS reference clock based on an LC oscillator. To achieve a low temperature coefficient, its LC tank is operated at a temperature-null phase. The result is a self-compensated oscillator (SCO) whose output can be programmed from 1 to 133 MHz and which draws 7 mA (no load) from a 3.3 V supply at 25 MHz. After a low cost room temperature trim, the SCO in both ceramic and plastic packages achieves a measured stability of ±50 ppm from −20°C to +70°C. At 133 MHz, its integrated jitter is 0.4 ps from 1.875 to 20 MHz, while at 25 MHz its period jitter is 2.7 ps.
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References
V. Bottom, A history of the quartz crystal industry in the USA, in Thirty Fifth Annual Frequency Control Symposium, 1981, pp. 3–12
C.S. Lam, A review of the recent development of MEMS and crystal oscillators and their impacts on the frequency control products industry, in IEEE Ultrasonics Symposium, (Beijing, 2008), pp. 694–704
H. Nathanson, W. Newell, R. Wickstrom, J. Davis, J.R., The resonant gate transistor. Electron Devices, IEEE Trans. 14(3), 117–133 (1967)
DSC8001 Series PureSilcon TM Programmable CMOS Oscillator Datasheet, MK – Q – B – P – D – 090110–03–2 ed. by (Discera, San Jose, 2010)
MEMS Replacing Quartz Oscillators, Application Note SiT-AN10010 Review 1.1, (SiTime Corporation, Sunnyvale, 2009)
M.H. Perrott et al., A temperature-to-digital converter for a MEMS-based programmable oscillator with < ±0.5-ppm frequency stability and < 1ps integrated jitter. Solid-State Circuit IEEE J. 48(1), 276–291 (2013)
M. Renata et al., Temperature-compensated high-stability silicon resonators. Appl. Phys. Lett. 90(24), 244107–3 (2007)
Wan-Thai Hsu, C.T.-C. Nguyen, Geometric stress compensation for enhanced thermal stability in micromechanical resonators, in Proceedings, 1998 I.E. International Ultrasonics Symposium, (Sendain, 1998), pp. 945–948, 5–8 Oct 1998
Wan-Thai Hsu, C.T.-C. Nguyen, Stiffness-Compensated temperature-insensitive micromechanical resonators, in Technical Digest, 2002 I.E. International Micro Electro Mechanical Systems Conference, (Las Vegas, 2002), pp. 731–734, 20–24 Jan 2002
R.F. Adams, D.O. Pederson, Temperature sensitivity of frequency of integrated oscillators. IEEE J. Solid-State Circuit SC-3(4), 391–396 (1968)
A.V. Boas, A. Olmos, A temperature compensated digitally trimmable on-chip IC oscillator with low voltage inhibit capability, in Proceeding IEEE International Symposium Circuits and Systems (ISCAS), vol. 1 (2004), pp. 501–504
K. Sandaresan, P.E. Allen, F. Ayazi, Process and temperature compensation in a 7-MHz CMOS clock oscillator. IEEE J. Solid-State Circuit 41(2), 433–441 (2006)
Y. Tokunaga et al., An on-chip CMOS relaxation oscillator with voltage averaging feedback. IEEE J. Solid-State Circuit 45(6), 1150–1158 (2010)
eoSemi Unveils Silicon Oscillator Technology, Announces Shipment of First Silicon to Select Customers (Congleton, 2012), 13 Mar 2012
S. Mahdi Kashmiri, Kamran Souri, Kofi A. A. Makinwa, A scaled thermal-diffusivity-based 16 MHz frequency reference in 0.16 μm CMOS. IEEE J. Solid-State Circuit 47(7), 1535–1545 (2012)
J. Ebrahimi, Thermal diffusivity measurement of small silicon chips. J. Phys. D. Appl. 3, 236–239 (1970)
Si500S Single-Ended Output Silicon Oscillator Review 1.0 5/11, (Silicon Laboratories, Austin)
M. McCorquodale et al., A 25-MHz self-referenced solid-state frequency source suitable for XO-replacement. Circ. Syst. I: Regul. Pap. IEEE Trans. 56(5), 943–956 (2009)
M.S. McCorquodale et al., A silicon Die as a frequency source, in Proceeding of IEEE International Frequency Control Symposium, (2010), pp. 103–108, 1–4 June 2010
3DN Series CrystalFree TM Oscillator Preliminary Data Sheet (Integrated Device Technology, San Jose, 2012)
A. Ahmed, B. Hanafi, S. Hosny, N. Sinoussi, A. Hamed, M. Samir, M. Essam, A. El-Kholy, M. Weheiba, A. Helmy, A highly stable CMOS Self-Compensated Oscillator (SCO) based on an LC tank temperature null concept, in Proceeding IEEE International Frequency Control Symposium, 2011, pp. 1–5
N. Sinoussi, A. Hamed, M. Essam, A. El-Kholy, A. Hassanein, M. Saeed, A. Helmy, A. Ahmed, A single LC tank self-compensated CMOS oscillator with frequency stability of ±100 ppm from −40°C to 85°C, in Proceeding IEEE International Frequency Control Symposium, 2012, pp. 1–5
B. Hanafi, S. Hosny, A. Ahmed, Method, system and apparatus for accurate and stable LC-based reference oscillators, U.S. Patent 8, 072, 281B2, (2011) 6 Dec 2011
J. Groszkowski, Frequency of Self-Oscillations, (Oxford/Pergamon, 1964)
A. Mirzaei, M.E. Heidari, R. Bagheri, S. Chehrazi, A.A. Abidi, The quadrature LC oscillator: a complete portrait based on injection locking. Solid-State Circuit IEEE J. 42(9), 1916–1932 (2007)
Acknowledgements
The authors would like to thank and appreciate the design engineers of the Timing Products division, Digital, Layout and Product Engineering teams at Si-Ware Systems for their continuous efforts in the realization, characterization and testing of the SCO.
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Helmy, A., Sinoussi, N., Elkholy, A., Essam, M., Hassanein, A., Ahmed, A. (2014). A Monolithic CMOS Self-compensated LC Oscillator Across Temperature. In: Baschirotto, A., Makinwa, K., Harpe, P. (eds) Frequency References, Power Management for SoC, and Smart Wireless Interfaces. Springer, Cham. https://doi.org/10.1007/978-3-319-01080-9_1
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DOI: https://doi.org/10.1007/978-3-319-01080-9_1
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