Housed in a small 2.0 × 2.5 × 0.8 mm ceramic package, IQD Frequency Products’s new IQXT-260 series of digitally compensated TCXOs employs an analog ASIC for the oscillator and a high-order temperature compensation circuit that provides a smoother signal. With a maximum current consumption of only 2 mA, the IQXT-260 offers stabilities down to ±0.5 ppm over an operating temperature range of –40° to 85°C with a clipped sinewave output. Operating from 1.8 to 3.3 V, the new range is available in three versions: TCXO, VCTCXO, and TCXO with enable/disable function, all across a frequency range of 10 to 52 MHz. The version with the enable/disable option only requires a standby current of typically <0.01 µA, which is ideal for battery operated equipment.
As frequency bands such as 2.4 GHz become overcrowded and the bandwidths need to be narrower, the precise signal and tighter frequency stability of a TCXO solution is ideal plus frequency slope and perturbation specifications can be customized to suite application requirements. The IQXT-260’s high stability, low power consumption, small footprint, and powerful compensation method makes this new TCXO ideally suited for demanding GPS mobile applications including Portable Navigation Devices as well as Wi-Fi, WiMax, WLAN, and Ethernet applications.
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