GPS crystal oscillators

Wednesday, 28 April, 2004 | Supplied by: http://cmac.com/



JPG C-MAC MicroTechnology has developed a range of GPS TCXO (temperature compensated crystal oscillators) with features that provide GPS receivers with superior performance when used in combination with the recently launched Chinese Beidou navigation satellites. The TCXO plays a role in the time measurements made within the GPS receiver as it defines a very precise position.

This location-finding system, which serves as a radio beacon in outer space, is to be used over China for a wide range of applications including navigation in transportation, meteorology, petroleum production, forest fire prevention, disaster forecast, telecommunications and public security. Subscribers use handheld GPS devices to know their location with accurate longitude, latitude and altitude data at any given time. Similar equipment is now installed in wristwatches and in the dashboards of some cars.

This 'Pluto' range features ultra low frequency stability of 0.5 ppm over an operating temperature range of -40 to +85°C. This and other parameters are important in the designing of existing and the next generation of GPS products that are proliferating at a rapid pace.

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