AD9572

Fiber Channel/Ethernet Clock Generator IC, 7 Clock Outputs AD9572 FEATURES Fully integrated dual VCO/PLL cores 0.22 ps rms jitter from 0.637 MHz to 10 MHz at 106.25 MHz 0.19 ps rms jitter from 1.875 MHz to 20 MHz at 156.25 MHz 0.42 ps rms jitter from 12 kHz to 20 MHz at 125 MHz Input crystal or clock frequency of 25 MHz Preset divide ratios for 106.25 MHz, 156.25 MHz, 33.33 MHz, 100 MHz, and 125 MHz Choice of LVPECL or LVDS output format Integrated loop filters Copy of reference clock output Rates configured via strapping pins 0.71 W power dissipation (LVDS operation) 1.07 W power dissipation (LVPECL operation) 3.3 V operation Space saving, 6 mm × 6 mm, 40-lead LFCSP APPLICATIONS Fiber channel line cards, switches, and routers Gigabit Ethernet/PCIe support included Low jitter, low phase noise clock generation FUNCTIONAL BLOCK DIAGRAM REFSEL REFCLK XTAL OSC LDO VCO CMOS 1 × 25MHz LVPECL OR LVDS 2 × 106.25MHz DIVIDERS PFD/CP LPF THIRD ORDER PFD/CP LPF 3RD ORDER AD9572 LD...