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Crystal oscillators capable of tight frequency calibration tolerance

5th July 2016

Daisy Stapley-Bunten

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Frequency control specialist, Euroquartz has launched two new ranges of military specification crystal oscillators designed for use in applications that require high reliability. Housed in industry standard 14-pin DIL (dual-in-line) packages, the new EQXO-1000BMK and EQXO-3000BMK clock oscillators incorporate a custom-designed quartz crystal and a CMOS/TTL compatible hybrid circuit on a ceramic substrate.

Manufactured using the latest advances in production technology, these oscillators are capable of achieving tight frequency calibration tolerance and high stability over a wide temperature range. Frequency range is from 200-200MHz with calibration tolerance of ±30ppm at 25°C and frequency tolerance of ±100 to ±50ppm over the full military temperature range from -55 to +125°C (±100 to ±30ppm over industrial temperature range from -40 to +85°C).

The high reliability ceramic substrate is packaged in a hermetically-sealed DIL metal package with four pins (EQXO-1000BMK) or 14 pins (EQXO-3000BMK) for extra mechanical security. Additional specifications include 5,000g shock survivability, 20g vibration survivability, double-sealed design, low EMI emission and standard 5.0V DC supply voltage (other voltages on request). Start-up time is 5ms maximum with rise/fall time of 6ns maximum and minimum duty cycle of 40%, 60% maximum. Standard output is CMOS, 50pF with other outputs available to special order.

Ideal for aerospace, defence and other 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.