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  1. Euroquartz
1 November 2016

Euroquartz Adds 8-Pin In-Line Mil-Spec Models to New Military Crystal Oscillator Range

Euroquartz adds 8-pin in-line mil-spec models

Frequency control specialist Euroquartz has added new 8-pin dual-in-line (DIL) models to its recently launched range of military specification crystal oscillators designed for use in high-reliability applications.

The new 8-pin DIL EQXO-2000BM series clock oscillators complement the 14-pin DIL models, EQXO-1000BMK and EQXO-3000BMK, which were launched earlier this year and 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 30kHz to 70MHz, with a calibration tolerance of ±10 to ±25ppm at 25°C and a frequency stability of ±100 or ±50ppm more than the full military temperature range from -55°C to 125°C.

The high-reliability ceramic substrate is housed in an industry standard 8-pin DIL size oscillator package with four pins and a ruggedised three-point crystal mounting system within a hermetically sealed metal package. Additional specifications include ageing of ±3ppm maximum in the first year, symmetry of 45% / 55% and standard 5.0V DC supply voltage (other voltages on request).

Standard output is CMOS, 50pF/10 TTL loads with other outputs available to order specially.

Ideal for upper atmosphere, aerospace, defence and other applications where high-reliability clock oscillators are required, the new EQXO-2000BM crystal oscillators can be screened to MIL-O-55310C, class B if required. Radiation tolerant EQXO-2000BMH versions will withstand ionising radiation to resist electrical failures for a total radiation dose of 40krad(SI).

The spectrum of crystal oscillator output signals can comprises of various components, as well as the fundamental frequency that can be seen on a spectrum...
Many modern applications require lower phase noise characteristics such as higher frequencies and lower operating voltages and this is pushing the boundaries of oscillator design...
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