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IQD launches a new GNSS-disciplined crystal oscillator

April 2, 2020  - By
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Photo: IQD

Photo: IQD

IQD has launched a new series of GNSS-disciplined oven controlled crystal oscillators (OCXOs), the IQCM-112 series.

The new design incorporates an internal GNSS receiver with a 1PPS output, which is compatible with an external GPS, GLONASS, BeiDou and Galileo source. It is housed in a 14-pin 60-millimeter-square package.

When coupled to an external aerial antenna via the incorporated SMA connector, in the event of the loss of the GNSS signal the highly specified 10-MHz OCXO will switch-in with a holdover capability of 1.5 µSeconds for a 24-hour period, thereby maintaining lock until restoration of the reference signal.

The standard operating temperature range of the module is -20° to 75° C but is also available with a -40° to 85° C operating temperature range. Other holdover specifications can be considered upon request.

The required power supply is 5V with a standard HCMOS output. Current consumption is 2A maximum during warm-up with this reducing to 1A once the steady-state condition is reached.

The design incorporates an internal adaptive algorithm that enables the module to “learn” the parameters of the GNSS signal after a period of three days of lock, so that the holdover function can start in the event of signal failure.

A built-in internal alarm indicates lock failure and subsequent restoration of signal. The unit incorporates a serial connection for more detailed interrogation of the device’s performance.

The IQCM-112 series is intended for a range of applications including land-based telecommunications systems and marine-based navigation systems.

The IQCM-112 forms part of a range of highly specified modules and Oven Controlled Crystal Oscillators available from IQD.

This article is tagged with , , , and posted in Latest News, OEM, Product Showcase

About the Author:


Senior Editor Tracy Cozzens joined GPS World magazine in 2006. She also is editor of GPS World’s newsletters and the sister website Geospatial Solutions. She has worked in government, for non-profits, and in corporate communications, editing a variety of publications for audiences ranging from federal government contractors to teachers.

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