XRT8010 Datasheet | Exar

312MHZ CLOCK & CRYSTAL MULTIPLIER WITH LVDS OUTPUTS NOVEMBER 2003 REV. 1.0.2 s 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 pact (4 x 4 mm) low inductance package is ideal for high frequency operation. Telemunications Sytems Features - 156 or 320 MHz Operating Range - Low Output Jitter: s 0.0009 UIRMS typical @ 155.52 MHz, per Telcordia GR-253-CORE for OC-3. Optimized for 15 to 40 MHz crystals Uses parallel fundamental mode - On Chip Crystal Oscillator Circuit s s APPLICATIONS - Selectable 8x or 16x multiplier - Selectable ÷1 or ÷2 LVDS output - LVDS output meets TIA/EIA 644A Specification (2001) - Gigabit Ethernet - SONET/SDH - SPI-4 Phase 2 - 8x or 16x Clock Multiplier for s puter - 3.3V Low power CMOS: <80 m W typical - -40°C to +85°C operating temperature - Extremely small 16-lead QFN package FIGURE 1. XRT8010 BLOCK DIAGRAM 15-40 M H z C rys tal X T A L1 - 20 p F +3.3V A V DD A V DD R EXT 10k Ω O VDD X TA L2 1 2 - 2 0 p F X R T 801...