IQD halves size of disciplined OCXO

Housed in a 30 x 25 x 14.6mm hermetically sealed through-hole metal package which covers approximately half the area of current models, the IQCM-160 disciplined oven controlled crystal oscillators (OCXO) module saves space in constrained designs.

IQD Frequency developed the OCXO to achieve a holdover specification of 1.5 microseconds over a period of eight hours when locked to a one pulse per second (PPS) input from an external GPS, GLONASS, BeiDou, Galileo or alternative 1PPS source.

The IQCM-160’s design incorporates an internal adaptive algorithm which enables the module to ‘learn’ the parameters of the GPS signal after a period of two days of lock so that the holdover function can start in the event of signal failure. An internal alarm indicates lock failure and subsequent restoration of signal. There is also a serial connection for more detailed interrogation of the device’s performance, adds IQD Frequency. Frequency is accurate to within ±0.005parts per billion when locked to a 1PPS external signal and can compete with the performance of many atomic clock references, claims the company.

The standard operating temperature range of the module is -40 to 85 degrees C. The required power supply is 3.3V with the output being standard HCMOS. Current consumption is only 750mA maximum during warm-up, reducing to 350mA once the steady-state condition is reached.

The IQCM-160 has 1PPS and 10MHz output and also UART interfaces for software management with a fixed baud rate of 115200 using one stop bit and no parity.

Target applications include land based telecommunications systems as well as marine based navigation systems.

The IQCM-160 forms part of a range of modules and OCXOs available from IQD.

IQD is part of the Würth Elektronik eiSos group. With active customers in over 80 countries, IQD claims to offer one of the most comprehensive frequency product ranges available, from low cost commercial grade product to that used in high reliability industrial and automotive applications including quartz crystals, clock oscillators, AEC-Q200 crystals and oscillators, VCXOs, TCXOs, OCXOs, GPS disciplined OCXOs, and rubidium oscillators.

Visit IQD at the Würth Elektronik eiSos stand at Embedded World (Hall 3, stand 3-247)