Clock oscillators offer stability over military temperatures

Clock oscillators from Statek are now available from Euroquartz. The STXO series offers tight frequency stability of ±20ppm over the military temperature range and ±10ppm for industrial applications.

Frequencies range from 10 to 55MHz. The miniature 3.2 x 2.5mm has low RMS jitter, typically less than 300fs, typical noise floor less than −161dBc/Hz, high shock survival options (over 20,000g) and low Allan Deviation and period jitter (1.4ps RMS).

Supply voltage options are 2.5 and 3.3V ±10 per cent with low current consumption of 3.0mA (no load across temperature range). Offering 15pF CMOS output load with enable/disable and tri-state functions enable the STXO range to deliver fundamental frequency output with no PLL artefacts.

Ocsillators are housed in a hermetically-sealed, ceramic four-pad surface mount package. Versions for industrial applications over −10 to +85 degree C and military applications over −55 to +125 degree C are offered. They are available with full military testing per MIL PRF 55310 on request. Tighter frequency stability performance can also be provided to special order.

Additional specifications include start-up time of 5ms maximum, rise/fall time of 5ns maximum, duty cycle of 45 per cent minimum/55 per cent maximum and low ageing of 2ppm in first year.


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