KVG Quartz Crystal Technology GmbH proudly present new hermetically sealed SMD OCXOs offering true Stratum 3 performance or even better, i.e. a worst case frequency stability of better than ±0.16 ppm overall for 24 hours.
Utilizing small-sized but high performance SC-cut crystals KVG’s engineers
designed new tight stability OCXOs what are able to extend the range of possible applications considerably.
The new O-9000-HS series OCXOs are packaged in a very small 14 mm x 9 mm x 8.5 mm SMD package. Nevertheless they offer a frequency stability of better than ±10 ppb in the temperature range from -20 to +70 °C. Even for the extended temperature range from -40 to +85 °C the new parts are still able to meet the frequency stability requirements of Telcordia Standard GR-1244 und GR-253-Core Stratum 3 resp. ANSI Clock T1.101 resp. the European standards ITU-T G.812 Type IV and G.813 Option 1, i.e. a frequency stability of better than ±4.6 ppm for 20 years and a 24 h ‘holdover stability’ of better than 0.32 ppm peak-to-peak (see note 1).
Nevertheless that exceptional OCXO offer a remarkable low steady state power consumption of 0.5 W only. The parts require supply voltages +3.3 V; the output signal is HCMOS.
Typical standard frequencies are 10 MHz, 12.8 MHz, 19.2 MHz, 20 MHz, 25 MHz and 38.88 MHz.
Special frequencies are available on demand.
Typical applications are network and synchronization units and systems for the professional telecommunication. Further prospective applications are frequency sources for GSM or WIMAX mobil phone base stations. So-called Picocell amd Femtocell base stations require small sized low cost OCXOs with good holdover stability for several days.
Samples are available on request.
KVG Quartz Crystal Technology GmbH is a German manufacturer of crystals, crystal filters and oscillators. For more than 70 years KVG have been one of the industrie’s technology leaders for high precision quartz crystal products.
(1) Note: most TCXOs - even stated as Stratum 3-compliant - are not able to meet that worst case Stratum 3 requirements. A true Stratum 3 part needs to meet 0.32 ppm peak-to-peak holdover stability. So-called ‘Stratum TCXOs’ usually are specified for a frequency stability vs. temperature of ±0.28 ppm. Considering an expected aging rate of ±0.02 ppm within 24 hours and a frequency stability vs. supply voltage changes of another ±0.02 ppm sums up to ±0.32 ppm what is double the true tighter Stratum 3 demand.