General Description

The SM802120 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 3.3V or 2.5V power supply and synthesizes eight differential 125MHz output clocks, six LVDS and two HCSL. The SM802120 accepts a 25 MHz crystal input.

Features

• Generates six LVDS 125MHz clocks and two HCSL 25MHz clocks

• 2.5V or 3.3V operating range

• Typical phase jitter @ 125 MHz (1.875MHz to 20MHz): 100fs

• Industrial temperature range (–40°C to +85°C)

• Green, RoHS, and PFOS compliant

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