Its internal VCO will operate over a range of frequencies from to 800MHz. The differential PECL output can be configured to be the VCO frequency divided or 8. With the output configured to divide the VCO frequency by 1, and with a 16.66MHz external quartz crystal used to provide the reference frequency, the output frequency can be specified in 16.66MHz steps. To 800MHz Differential PECL Outputs ☒5ps Typical PeaktoPeak Output Jitter Minimal Frequency OverShoot Synthesized Architecture Serial 3Wire Interface Parallel Interface for PowerUp Quartz Crystal Interface 28Lead PLCC Package Operates from or 5.0V Power Supplyįunctional Description The internal oscillator uses the external quartz crystal as the basis of its frequency reference. The output of the reference oscillator is sent directly to the phase detector. With a 16.66MHz crystal, this provides a reference frequency of 16.66MHz.

Although this data sheet illustrates functionality only for a 16MHz and 16.66MHz crystal, any crystal in the 1020MHz range can be used. In addition to the crystal, an LVCMOS input can also be used as the PLL reference. The reference is selected via the XTAL_SEL input pin. The VCO within the PLL operates over a range to 800MHz. Its output is scaled by a divider that is configured by either the serial or parallel interfaces.

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