ICS843023

PRELIMINARY Integrated Circuit Systems, Inc. www.DataSheet4U.com ICS843023 FEMTOCLOCKS™ CRYSTAL-TO3.3V, 250MHZ LVPECL CLOCK GENERATOR FEATURES 1 differential 3.3V LVPECL output Crystal oscillator interface designed for 25MHz, 18pF parallel resonant crystal Maximum output frequency: 250MHz, using a 25MHz crystal VCO range: 490MHz - 640MHz RMS phase jitter @ 250MHz, using a 25MHz crystal (12KHz - 20MHz): 0.33ps (typical) 3.3V operating supply 0°C to 70°C ambient operating temperature GENERAL DESCRIPTION The ICS843023 is a Gigabit Ethernet Clock Generator and a member of the HiPerClocksTM HiPerClockS™ family of high performance devices from ICS. The ICS843023 uses a 25MHz crystal to synthesize 250MHz. The ICS843023 has excellent phase jitter performance, over the 1.875MHz – 20MHz integration range. The ICS843023 is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space. ICS BLOCK DIAGRAM OE 25MHz XTAL_IN PIN ASSIGNMENT VCC XTAL_OUT XTAL_IN VEE 1 2 3 4 8 7 6 5 Q0 nQ0 VCC OE OSC XTAL_OUT Phase Detector VCO ÷2 (fixed) Q0 nQ0 ICS843023 ÷20 (fixed) 8-Lead TSSOP 4.40mm x 3.0mm x 0.925mm package body G Package Top View The Preliminary Information presented herein represents a product in prototyping or pre-production. The noted characteristics are based on initial product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications without notice. 843023AG ...