New high-performance high-reliability crystal oscillators

Designed for use in applications that demand high reliability, two new ranges of Euroquartz Mil-spec crystal oscillators are now available from Saelig. Available in industry-standard dual-in-line packages, the new EQXO-1000BMK and EQXO-3000BMK clock oscillators feature a custom-designed quartz crystal and a CMOS/TTL compatible hybrid circuit mounted on a ceramic substrate. Manufactured using the latest advances in production technology, the oscillators achieve tight frequency calibration tolerance and high stability over a wide temperature range. The frequency range available is from 200kHz to 200MHz, with a calibration tolerance of ±30ppm at 25C and a frequency tolerance of ±100 to ±50ppm over the full military temperature range from -55C to +125C (±100 to ±30ppm over industrial temperature range from -40C to +85C). The high-reliability ceramic substrate is packaged in a hermetically-sealed DIP metal package with four pins (EQXO-1000BMK) or 14 pins (EQXO-3000BMK) for extra mechanical security. Additional design specifications include 5000g shock survivability, 20g vibration survivability, a double-sealed construction, low EMI emission, and standard 5VDC operating supply voltage, with other voltages available by request. Start-up time is 5ms maximum, with rise/fall time of better than 6ns. The standard output is CMOS-compatible at 50pF with other outputs available to special order. Ideal for aerospace, defence and similar demanding applications where high-reliability clock oscillators are required, the new EQXO-1000BMK and EQXO3000BMK crystal oscillators can be screened to MIL-O-55310F, class B if required, says the company.