Tiny OCXOs Trim Phase Noise

Sept. 23, 2010

The OCXO 147 series of oven-controlled crystal oscillators (OCXOs) from Isotemp Research provides low-phase-noise performance for frequencies from 5 to 50 MHz. Delivering HCMOS level outputs, the oscillators achieve phase noise of -100 dBc/Hz offset 10 Hz from the carrier. Frequency stability is as good as +/-30 ppb for temperatures from 0 to +70 deg. C. The oscillators are designed to run on supply voltages of +3.3 or +5 VDC. The miniature oscillators measure only 20.3 x 12.7 mm. The OCXOs can be used in many communication applications requiring high frequency stability and low phase noise such as master system clocks, femtocells, and mobile base stations.

About the Author

Jack Browne

Technical Contributor

Jack Browne, Technical Contributor, has worked in technical publishing for over 30 years. He managed the content and production of three technical journals while at the American Institute of Physics, including Medical Physics and the Journal of Vacuum Science & Technology. He has been a Publisher and Editor for Penton Media, started the firm’s Wireless Symposium & Exhibition trade show in 1993, and currently serves as Technical Contributor for that company's Microwaves & RF magazine. Browne, who holds a BS in Mathematics from City College of New York and BA degrees in English and Philosophy from Fordham University, is a member of the IEEE.