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Precision Clock Distributor with Integrated PLL from the PowerWise® Family
National Semiconductor

Description
The LMK02000 precision clock conditioner combines the functions of jitter cleaning/reconditioning, multiplication, and distribution of a reference clock. The device integrates a high performance Integer-N Phase Locked Loop (PLL), three LVDS, and five LVPECL clock output distribution blocks. Each clock distribution block includes a programmable divider, a phase synchronization circuit, a programmable delay, a clock output mux, and an LVDS or LVPECL output buffer. This allows multiple integer-related and phase-adjusted copies of the reference to be distributed to eight system components. The clock conditioner comes in a 48-pin LLP package and is footprint compatible with other clocking devices in the same family.
Features

 •  20 fs additive jitter
 •  Integrated Integer-N PLL with outstanding normalized phase noise contribution of -224 dBc/Hz
 •  Clock output frequency range of 1 to 800 MHz
 •  3 LVDS and 5 LVPECL clock outputs
 •  Dedicated divider and delay blocks on each clock output
 •  Pin compatible family of clocking devices
 •  3.15 to 3.45 V operation
 •  Package: 48 pin LLP (7.0 x 7.0 x 0.8 mm)




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