New crystal oscillators with low-frequency tolerance over wide temperature range

Euroquartz has presented a new range of crystal oscillators from Statek Inc., providing tight frequency stability for usage in a wide range of high-reliability applications.

The new MTXO tight stability crystal oscillators provide fundamental frequencies from 10MHz to 50MHz with a total frequency tolerance as low as ±5ppm (including first-year ageing) over the defence temperature range from -55C to +125C. Versions supplying high shock resistance up to 75,000g – designated MTXOHG – are also available.

Housed in a compact 3.2mm x 2.5mm hermetically-sealed ceramic package, MTXO crystal oscillators offer ultra-low period jitter of 1.7ps (RMS) with ultra-low Allan deviation and phase jitter. Suitable for reflow soldering at a maximum process temperature of 260C for 20 seconds, the new MTXOs offer CMOS output into a 10pF load with a clipped sinewave option available. Extra specifications include low acceleration sensitivity, start-up time of 5ms maximum, and rise/fall time of 5ns maximum with a duty cycle of 45% minimum and 55% maximum.

The supply voltage requirement is 3.3V DC ±10% with a typical supply current of just 3mA. Optional defence testing is per MIL-PRF-55310 level B, with industrial temperature range versions also available. Supply packaging options are tray pack or tape-and-reel per EIA 481.

These new oscillators are excellent for use in various industrial, defence and aerospace applications, including RF telemetry, master clock, telecommunications, navigation and handheld devices and instrumentation.