SM802XXX
Flexible Ultra-Low Jitter Clock Synthesizer
Clockworksв„ў FLEX General Description Features The SM802xxx series is a member of the ClockWorksв„ў
family of devices from Micrel and provide an extremely
low-noise timing solution for applications such as (1-100)
Gigabit Ethernet, SONET, Wireless base station, Satellite
communication, Fibre Channel, SAS/SATA and PCI-e. It is
based upon a unique PLL architecture that provides less
than 250fs phase jitter. 115fs at 156.25MHz (1.875MHz to 20MHz) 245fs at 156.25MHz (12kHz to 20MHz) On chip power supply regulation for excellent board
level power supply noise immunity Generates up to 8 combinations of differential or 16
single-ended clock outputs.
-LVPECL, LVDS, HCSL, LVCMOS (SE or Diff) Selectable input:
-Crystal: 11MHz to 30MHz
-Reference input: 11MHz to 80MHz No external crystal oscillator capacitors required 2.5V or 3.3V operating power supply Available in Industrial Temperature range Available in Green, RoHS, and PFOS compliant QFN
packages:
-44-pin, 7mm Г— 7mm
-32-pin, 5mm Г— 5mm
-24-pin, 4mm Г— 4mm
-16-pin, 3mm Г— 3.5mm The devices operate from a 2.5V or 3.3V power supply
and synthesize up to 8 different combinations (LVPECL,
LVDS, HCSL) of differential or 16 single ended output
clocks. The devices accept an external reference clock or
crystal input. …
