Design Support

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This application report presents phase noise data taken on the Texas Instruments' CDCE62005 jitter cleaner and synchronizer PLL. The phase noise performance of the CDCE62005 depends both on the phase noise of the reference clock and the CDCE62005 itself. This application report shows the phase noise performance at the most popular CDMA frequencies and helps the user to choose the right clocking solution for their particular applications. These test results confirm that the CDCE62005 can provide clocks better than –145dBc/Hz phase noise at 10-MHz offset from the carrier frequency. Low phase noise is a requirement for wireless applications as well as many other high-performance sampling systems. The report also reviews the open-loop VCO performance of the CDCE62005 device.