Fully Integrated Frequency Reference With 1.7 ppm Temperature Accuracy Within 0-80°C

A fully integrated 52 MHz frequency reference, designed in a 0.35 μm CMOS process, achieves 1.7 ppm frequency temperature accuracy within 0 to 80°C using a nonlinear compensation technique. The proposed low TC f 0 reference oscillator achieves the lowest reported uncompensated temperature coefficien...

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Bibliographic Details
Published inIEEE journal of solid-state circuits Vol. 48; no. 11; pp. 2850 - 2859
Main Authors Ates, Erdogan Ozgur, Ergul, Atilim, Aksin, Devrim Yilmaz
Format Journal Article
LanguageEnglish
Published New York, NY IEEE 01.11.2013
Institute of Electrical and Electronics Engineers
Subjects
Accuracy
Applied sciences
Capacitance
Circuit properties
Design. Technologies. Operation analysis. Testing
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Exact sciences and technology
Integrated circuits
LC Colpitts oscillators
Oscillators
Oscillators, resonators, synthetizers
phase noise
Resistance
Resonant frequency
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Temperature measurement
temperature stability
Varactors
voltage controlled oscillators
Phase noise
Atomic clock
Voltage controlled oscillator
LC Colpitts oscillators
Differential circuit
Jitter
Output signal
Thermal stability
Temperature coefficient
Thermal compensation
Complementary MOS technology
voltage controlled oscillators
Frequency standards
Root mean square value
temperature stability
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Summary:A fully integrated 52 MHz frequency reference, designed in a 0.35 μm CMOS process, achieves 1.7 ppm frequency temperature accuracy within 0 to 80°C using a nonlinear compensation technique. The proposed low TC f 0 reference oscillator achieves the lowest reported uncompensated temperature coefficient, i.e., 65.25 ppm/°C, among the integrated frequency references. The output reference frequency is obtained by dividing the differential LC Colpitts oscillator output operating at 1.6 GHz. Oscillator core dissipates 14 mW from 2.5 V. The blocks related to the temperature compensation scheme and the remaining system blocks consume 3 mW and 165 mW from 3.3 V supply, respectively. The measured phase noise of 52 MHz output is -94 dBc/Hz at 10 kHz offset frequency and rms period jitter is 3.2 ps.
ISSN:0018-9200
1558-173X
DOI:10.1109/JSSC.2013.2280052