Euroquartz has released a new range of miniature surface mount TCXOs offering ±2.5ppm frequency stability and standard output frequencies of 12, 20, 24, 25, 26, 40, 50 and 60MHz. The new EM211T series offers frequencies from 10MHz to 60MHz with CMOS output in a tiny 2mm x 1.36mm x 0.7mm SMD package.
With LVCMOS output into a 15pF load, over the industrial temperature range (-40°C to +85°C), the error is from ±2.5ppm to ±10ppm, frequency dependent. Typical SSB phase noise ranges between -85dBc/Hz and -154dBc/Hz at 25C for a 50MHz frequency output. And the new series of oscillators are suitable for a wide range of applications where high precision is critical. The tiny package makes these tcxo especially suitable for embedded systems.
Frequency stability specifications are within the first year of anti-aging ±1ppm maximum, ±0.3ppm maximum voltage change ±5% change, ±0.3ppm maximum load change ±10% change and ±1ppm maximum reflow (SMD type), 24% after one reflow hourly measurement.
Supply voltage options for these components are 1.8, 2.5, and 3.3V ±5%, with a maximum current consumption of 8mA at 3.3V. Also available in a standard-format six-pad 2mm x 1.36mm SMD ceramic package with a hermetic metal lid.
The maximum rise/fall time is 10ns, the duty cycle is 50%±5% as the standard, and the output enable/enable is the standard. At 25C±2C, the initial calibration tolerance is less than ±2ppm. Storage temperature: -55C ~ +125C.
