General Description

The SM802112 is a member of the ClockWorks™ family of devices from Micrel and provides extremely low-noise clock signals. 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 two LVDS output clocks, one at 480MHz and one at 80MHz and one LVCMOS clock at 80MHz. The SM802112 accepts an 80MHz LVCMOS reference clock or an 80MHz 1Vp-p sine wave.

Features

• Generates two LVDS clock outputs, one at 480MHz and one at 80MHz

• Generates one LVCMOS clock output at 80MHz

• 2.5V or 3.3V operating range

• Typical phase jitter @ 480MHz (12kHz to 20MHz): 290fs

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

• Green, RoHS, and PFOS compliant

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

Applications

• Set Top Box