XRT8010IL-F MaxLinear

XRT8010 312MHZ CLOCK & CRYSTAL MULTIPLIER WITH LVDS OUTPUTS NOVEMBER 2003 REV. 1.0.2 Telecommunications Sytems DESCRIPTION FEATURES The XRT8010 is a monolithic analog phase locked loop that provides a high frequency LVDS clock 156 or 320 MHz Operating Range output, using a low frequency crystal or reference Low Output Jitter: clock. It is designed for SONET/SDH and other low jitter applications.The high performance of the IC 0.0009 UI typical 155.52 MHz, per RMS provides a very low jitter LVDS clock output up to 320 Telcordia GR-253-CORE for OC-3. MHz, while operating at 3.3 volts. The XRT8010 has On Chip Crystal Oscillator Circuit a selectable 8x or 16x internal multiplier for an external crystal or signal source. The Output Enable Optimized for 15 to 40 MHz crystals pin provides a true disconnect for the LVDS output. Uses parallel fundamental mode The very compact (4 x 4 mm) low inductance package is ideal for high frequency operation. Selectable 8x or 16x multiplier Selectable 1 or 2 LVDS output APPLICATIONS LVDS output meets TIA/EIA 644A Specification Gigabit Ethernet (2001) SONET/SDH 3.3V Low power CMOS: <80 mW typical SPI-4 Phase 2 -40C to +85C operating temperature 8x or 16x Clock Multiplier for Extremely small 16-lead QFN package Computer FIGURE 1. XRT8010 BLOCK DIAGRAM 15-40 MHz +3.3V Crystal R EXT AV XTAL1 XTAL2 AV 10k OV DD DD DD 12 - 20 pF 12 - 20 pF Voltage Reference XRT8010 & Bias Generator VCO Oscillator Calibration Logic Circuit & Input Buffer Selectable Phase Charge Loop VCO 1or 2 Detector Pump Filter Divider OUTP Feedback Divider 8or16 LVDS Output OUTN O AGND AGND AGND FS1 FS0 PD GND OE (Crystal) Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.comXRT8010 312MHZ CLOCK & CRYSTAL MULTIPLIER WITH LVDS OUTPUTS REV. 1.0.2 FIGURE 2. PIN-OUT OF THE XRT8010 (TOP VIEW) 12 1 11 2 XRT8010 10 3 9 4 ORDERING INFORMATION PART NUMBER PACKAGE TYPE OPERATING TEMPERATURE RANGE XRT8010IL 16 LEAD QUAD FLAT NO LEAD -40C to +85C (4 mm x 4 mm, QFN) 2 16 5 15 6 14 7 13 8