Fiber Channel/Ethernet Clock Generator IC, PLL Core, Dividers, 7 Clock Outputs
The PLL section consists of a low noise phase frequency detector (PFD), a precision charge pump (CP), a low phase noise voltage controlled oscillator (VCO), and a preprogrammed feedback divider and output divider. By connecting an external crystal or reference clock to the REFCLK pin, frequencies up to 156.25 MHz can be locked to the input reference. Each output divider and feedback divider ratio is preprogrammed for the required output rates.
A second PLL also operates as an integer-N synthesizer and drives two LVPECL or LVDS output buffers for 106.25 MHz operation. No external loop filter components are required, thus conserving valuable design time and board space.
The AD9572 is available in a 40-lead, 6 mm × 6 mm lead frame chip scale package (LFCSP) and can be operated from a single 3.3 V supply. The temperature range is −40°C to +85°C.APPLICATIONS
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This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.