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Digitally compensated TCXO on display at IMS 2015

21st May 2015
Jordan Mulcare

IQD’s QXT-260 series of digitally compensated TCXOs, which are housed in a small 2.0x2.5x0.8mm ceramic package, is being launched at IMS 2015. The device employs an analogue ASIC for the oscillator and a high order temperature compensation circuit that provides a smoother signal.

With a maximum current consumption of only 2mA, the IQXT-260 offers stabilities down to ±0.5ppm over an operating temperature range of -40 to +85°C with a clipped sinewave output. Operating from 1.8 to 3.3V, the latest range is available in three versions: TCXO, VCTCXO and TCXO, with enable/disable function, all across a frequency range of 10 to 52MHz.

The version with the enable/disable option only requires a standby current of typically less than 0.01µA, which is suitable for battery operated equipment. As frequency bands such as 2.4GHz become overcrowded and the bandwidths need to be narrower, the precise signal and tighter frequency stability of a TCXO solution is suitable. In addition, frequency slope and perturbation specifications can be customised to suite application requirements.

The IQXT-260 TCXO's high stability, low power consumption, small footprint and powerful compensation method makes it suitable for demanding GPS mobile applications including Portable Navigation Devices as well as WiFi, WiMax, WLAN and Ethernet applications.

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