Electronics Technology


Wide range of new frequency control products launched at electronica

7 March 2007 Electronics Technology

Frequency control specialist, Euroquartz, launched a wide range of new products at the electronica 2006 trade show in Germany.

Euroquartz unveiled a new range of dielectric microwave products, a new 8-pin DIL oscillator for defence and aerospace industries, high performance ultraminiature crystals, low power clock oscillators, an impressively-specified LVDS oscillator range and a new high specification range of OCXOs including STRATUM III specification products.

A new partnership agreement with Chinese manufacturer Caiqin Electronics extended the capabilities of Euroquartz's filter product line with frequency range now up to 3,5 GHz. Applications include RF and microwave communications such as GSM, 3G, GPS, satellite and TV transmission, wireless security systems, radar, aerospace and military.

Mil-spec

Also on show was a new series of military specification clock oscillators for use in aerospace, defence and similar hostile environment applications. The new EQXO-2000BM series oscillators are housed in the popular 8 pin DIL package and offer frequencies from 30 kHz to 70 MHz with frequency stability of either ±100 ppm or ±50 ppm over the full military temperature range from -55–125°C.

For equipment used in space or the upper atmosphere, the EQXO-2000BM series oscillators can be produced in radiation-tolerant versions. Designated EQXO-2000BMH, these parts are designed to withstand ionising radiation enabling the oscillators to resist electrical failures for a total radiation dose of 40 krad (SI).

Small and low-power

Euroquartz also launched two new surface mount crystals housed in micro-miniature packages: the X42 measuring just 4 x 2,5 x 0,6 mm and the X4115 measuring only 4,1 x 1,5 x 0,7 mm.

Available in the frequency range from 12 to 50 MHz, the X42 series crystals have a gold-plated ceramic base and a seam welded metal lid providing a stable device with very low ageing. The rugged construction ensures that these crystals have high shock and vibration resistance. X42 series crystals are specifically designed for use in small handheld communications devices such as PDAs, GPS and Bluetooth products. The X4115 crystals provide 32,768 kHz output in a package designed to provide the smallest possible component size for realtime clock applications - well-suited for battery-powered, handheld equipment.

New low power clock oscillators - the XOK91 and XOK53 draw less than 1,7 mA. Both these series are available in commercial (0-70°C) and industrial (-40-85°C) versions running off 1,8, 2,5 and 3,3 V power supplies.

A new LVDS oscillator, the 3HD5761, offers impressive specification in a small 7 x 5 mm package to provide circuit interfaces for FPGAs, ASICs and similar devices. Offering frequency range from 100 to 320 MHz, the stable duty ratio enables realisation of double data rate (DDR) RAM applications and devices like computer networks, video, graphics cards etc. The oscillator also provides an ideal clock signal for high-speed serial communication such as Serial-ATA, Fibre Channel, PCI-Express, Ethernet, HyperTransport, IEEE 1394b etc.

OCXO

Also launched was a new high specification range of oven-controlled crystal oscillators (OCXOs) including sine wave and HCMOS outputs and OCXOs meeting STRATUM III specifications. Several OCXOs in the range have a choice of AT-cut or SC-cut crystals. AT-cut crystals offer stabilities from ±0,1ppm over 0 to +50°C and the other, higher stability part that uses SC-cut crystals offers stability from 10 ppb over 30-70°C.

Two OCXOs are available meeting STRATUM III specifications, the OC14T33C for 3,0 V operation and the OC14T5C for 5 V operation. Both parts offer HCMOS 47 pF output over the frequency range from 1,25 to 40 MHz. Stability of both types is ±4,6 ppm for all causes.

For more information contact Jeva Narian, Arrow Altech Distribution, +27 (0)11 923 9600, [email protected]



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