General Description

The SM802149 is a member of the ClockWorks family of

devices from Micrel and provides an extremely low-noise

timing solution. It is based on a unique patented

ClockWorks Flex architecture that provides very low phase

noise.

The device operates from a 3.3V or 2.5V power supply and synthesizes eight differential LVDS clocks, four at 156.25MHz and four at 3125MHz, or four at 78.125MHz and four at 156.25MHz.

The SM802149 accepts a 26.04166MHz crystal or external LVCMOS input.

Features

• Generates eight differential LVDS clocks: either four at 156.25MHz and four at 312.5MHz, or four at 78.125MHz and four at 156.25MHz

• 2.5V or 3.3V operating range

• Typical phase jitter (1.875MHz to 20MHz): 99fs

• Industrial temperature range

• Green, RoHS, and PFOS compliant

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