General Description

The SM802123 is a member of the ClockWorks™ family of devices from Micrel and provides an extremely low-noise timing solution. It is based upon a unique patented RotaryWave® architecture that provides very-low phase noise.

The device operates from a 2.5V or 3.3V power supply and synthesizes 16 LVCMOS output clocks, eight at 125MHz and eight at 25MHz. The SM802123 accepts a 25MHz LVCMOS reference input.

Features

• Generates eight LVCMOS output clocks at 125MHz and eight LVCMOS output clocks at 25MHz

• 2.5V or 3.3V operating range

• Typical phase jitter @ 125MHz (1.875MHz to 20MHz): 115fs

• Industrial temperature range

• Green, RoHS, and PFOS compliant

• Available in 44-pin 7mm × 7mm QFN package

Applications

• Gigabit Ethernet – (GbE)