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Voltage Controlled Oscillator

Wed, 02/21/2001 - 8:22am
Z-Communications announced the introduction of the SMV2330L surface mount low profile package VCO for demanding W-CDMA Basestation systems. This compact packaged device has been specially engineered to lend itself for quick integration into PLLs. The SMV2330L will generate frequencies between 2300 and 2360 MHz within a control voltage range of 0.5 to 2.5 Vdc allowing the error voltage to be taken directly from the IC's charge pump circuitry. This device conserves energy by drawing 8 mA of current from a 2.7 Vdc supply and saves PCB space by measuring only 0.3× 0.3× 0.08.

The SMV2330L exhibits spectral purity of – 88 dBc/Hz, typically, at 10 kHz from the carrier and is specified to operate over the extended commercial temperature range of – 30 to 85 ° C. In addition, this low powered device provides the end user – 0.25 ± 3.75 dBm of output power into a 50 Ω load and suppresses the second harmonic to better than – 12 dBc. The SMV2330L incorporates a 2 dB buffer pad on the output helping to further minimize the pulling and pushing effect of the load on the VCO. This low noise VCO pulls less than 13 MHz with a 14 dB return loss, any phase, and pushes less than 10 MHz/V within a 5% change in the supply voltage.

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