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

02-10-2023 | Euroquartz | Passives

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.

By Seb Springall