A single LC tank self-compensated CMOS oscillator with frequency stability of &amp;#x00B1;100ppm from &amp;#x2212;40&amp;#x00B0;C to 85&amp;#x00B0;C

Sinoussi, N.; Hamed, A.; Essam, M.; Elkholy, Ahmed; Hassanein, Ahmed M. D. E.; Saeed, Mohamed O.; Helmy, A.; Ahmed, A. Y.

doi:10.1109/fcs.2012.6243676

Cited by 9 publications

(7 citation statements)

References 8 publications

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“…Such a wide temperature range represents a challenge even for XOs to be achieved in a cost efficient method [9]. Actually, the best performances reported so far for pure CMOS oscillators do not exceed the industrial temperature range (-40-85°C) [3], [4], [5] and [10]. This motivated the work herein as a continuation to the earlier research.…”

Section: Introductionmentioning

confidence: 91%

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A CMOS LC-based frequency reference with ±40ppm stability from −40°C to 105°C

Gaied¹,

Khairy²,

Atef³

et al. 2015

2015 Joint Conference of the IEEE International Frequency Control Symposium &Amp; The European Frequency and Time Forum

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This work presents a highly stable monolithic integrated CMOS LC-based frequency reference. The frequency reference is based on a Self-Compensated Oscillator (SCO) architecture where the LC tank operates at a specific phase Phi-NULL where frequency sensitivity versus temperature is minimum. A new compensation technique is applied over Phi-Null to further optimize frequency stability and extend the temperature range. The new technique is based on an analog approach and induces a minimum impact on oscillator phase noise, current consumption and die area. Utilizing this technique, the temperature range has been extended to (-40-105 o C) with a ±40ppm frequency stability. Achieved performance makes it possible for the SCO to be introduced to automotive applications where crystals suffer vibration induced stability issues.

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Section: Introductionmentioning

confidence: 91%

“…The SCO has demonstrated ±50ppm frequency stability across the temperature range (-20-70°C) [3] and ±100ppm across (-40-85°C) [10]. However, the frequency deviation across temperature (Δf TC ) of the SCO totally relied upon the LC tank engineering without any further control knobs.…”

Section: Introductionmentioning

confidence: 99%

A CMOS LC-based frequency reference with ±40ppm stability from −40°C to 105°C

Gaied¹,

Khairy²,

Atef³

et al. 2015

2015 Joint Conference of the IEEE International Frequency Control Symposium &Amp; The European Frequency and Time Forum

Self Cite

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show abstract

“…In their commercially available designs, active as well as passive compensation techniques in combination with a calibration step are used to obtain this frequency stability. However, recently also another technique has been invented, based on the so-called LC T-null concept [3,109,234]. When drawing the transfer function of an LC tank for different temperatures, the resonance frequency (phase shift equal to zero) slightly drifts as a result of temperature drift on the passives.…”

Section: Fig 48mentioning

confidence: 99%

“…In [234] a single tank oscillator is built based on the same concept. In this case the tank output signal is fed through a low-pass and a high-pass filter.…”

Section: Fig 49mentioning

confidence: 99%

Temperature- and Supply Voltage-Independent Time References for Wireless Sensor Networks

Smedt

Gielen

Dehaene

2015

Analog Circuits and Signal Processing

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“…For MOS technology, LC-tank oscillator shows better frequency and phase noise performances, however, implementing inductor with high quality factor in a standard CMOS process require nonstandard process steps and always limited by parasitic effects. Moreover, LC-tank oscillator generally has a narrow tuning range [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

A Temperature Insensitive Ring Oscillator for Low Power RF Communications

Yang

Xia

et al. 2013

2013 IEEE International Conference on Green Computing and Communications and IEEE Internet of Things and IEEE Cyber, Physical A

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CMOS Ring oscillators can be used in RF communication with lower power consumption and smaller area as compared with LC tanks, but they are sensitive to environmental temperatures. It is therefore important to compensate the temperature effect for CMOS ring oscillators. In this paper we studied a new kind of circuit structure. It can make the output frequency of the ring oscillator remain constant at different temperatures. The circuit has been implemented in a 0.35 m COMS technology. The circuit includes three blocks: the temperature sensor block, the temperature adaptive block and the subtraction circuit block. We show theoretical analysis of the principals of the compensation effect. The modeling and parameters tuning process are quite simple. The proposed circuit structure can compensate the temperature effect and stabilize the output frequency of ring oscillators.

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A single LC tank self-compensated CMOS oscillator with frequency stability of ±100ppm from −40°C to 85°C

Cited by 9 publications

References 8 publications

A CMOS LC-based frequency reference with ±40ppm stability from −40°C to 105°C

A CMOS LC-based frequency reference with ±40ppm stability from −40°C to 105°C

Temperature- and Supply Voltage-Independent Time References for Wireless Sensor Networks

A Temperature Insensitive Ring Oscillator for Low Power RF Communications

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