DESCRIPTION

The XRT8010 is a monolithic analog phase locked loop that provides a high frequency LVDS clock output, using a low frequency crystal or reference clock. It is designed for SONET/SDH and other low jitter applications.The high performance of the IC provides a very low jitter LVDS clock output up to 320 MHz, while operating at 3.3 volts. The XRT8010 has a selectable 8x or 16x internal multiplier for an external crystal or signal source. The Output Enable pin provides a true disconnect for the LVDS output. The very compact (4 x 4 mm) low inductance package is ideal for high frequency operation.

FEATURES

• 156 or 320 MHz Operating Range

• Low Output Jitter:

■ 0.0009 UIRMS typical @ 155.52 MHz, per

Telcordia GR-253-CORE for OC-3.

• On Chip Crystal Oscillator Circuit

■ Optimized for 15 to 40 MHz crystals

■ Uses parallel fundamental mode

• Selectable 8x or 16x multiplier

• Selectable ÷1 or ÷2 LVDS output

• LVDS output meets TIA/EIA 644A Specification (2001)

• 3.3V Low power CMOS: <80 mW typical

• -40°C to +85°C operating temperature

• Extremely small 16-lead QFN package

APPLICATIONS

• Gigabit Ethernet

• SONET/SDH

• SPI-4 Phase 2

• 8x or 16x Clock Multiplier for

■ Computer

■ Telecommunications Sytems