Using coaxial resonator technology, Z-Communications has developed a voltage-controlled oscillator (VCO) with unparalleled performance. Featuring superior phase noise, low pushing/pulling and excellent power flatness, the innovative CRO2645A is designed for the broadband radio application. By covering 2615 to 2675 MHz in 0.5 to 4.5 VDC of tuning with unmatched phase noise performance, the CRO2645A promises to enhance any point-to-multipoint radio system. Plus, this VCO delivers a cleanspectral signal of -79 and -109 dBc/Hz at 1 and 10 KHz offsets, respectively, while covering the 60 MHz bandwidth with an average tuning sensitivity of 23 MHz/V.

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The CRO2645A is designed to operate off a 5 VDC supply while drawing only 19 mA of current. It provides the end user 3±2 dBm of output power into a 50 W load and over the temperature range of -10 to 85°C. This low-noise, rugged VCO is further enhanced by its coaxial resonator technology that will minimize the effects of microphonics, a must for any successful radio design.

The CRO2645A suppresses the second harmonic to better than -15 dBc and is further heightened by pushing less than 1 MHz within 5 percent of the nominal supply voltage and pulling less than 1 MHz with a 14 dB return loss, any phase. The CRO2645A comes in industry-standard MINI package measuring 0.50 inch x 0.50 inch x 0.22 inch. This VCO is suitable for automated surface-mount assembly and reflow; it is available in tape-and-reel packaging for production requirements.