ICS843011

Integrated Circuit Systems, Inc. www.DataSheet4U.com ICS843011 FEMTOCLOCKS™ CRYSTAL-TO3.3V LVPECL CLOCK GENERATOR FEATURES 1 differential 3.3V LVPECL output Crystal oscillator interface designed for 26.5625MHz 18pF parallel resonant crystal Output frequency: 106.25MHz or 100MHz VCO range: 560MHz - 680MHz RMS phase jitter @ 100MHz, using a 25MHz crystal (637KHz - 10MHz): 0.80ps (typical) RMS phase noise at 106.25MHz Phase noise: Offset Noise Power 100Hz ............... -92.8 dBc/Hz 1KHz .............. -119.6 dBc/Hz 10KHz .............. -129.5 dBc/Hz 100KHz .............. -130.5 dBc/Hz 3.3V operating supply Lead-Free package fully RoHS compliant -40°C to 85°C ambient operating temperature GENERAL DESCRIPTION The ICS843011 is a Fibre Channel Clock Generator and a member of the HiPerClocksTM family of high HiPerClockS™ performance devices from ICS. The ICS843011 uses a 26.5625MHz crystal to synthesize 106.25MHz or a 25MHz crystal to synthesize 100MHz. The ICS843011 has excellent <1ps phase jitter performance, over the 637KHz – 10MHz integration range. The ICS843011 is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space. ICS FREQUENCY TABLE Crystal (MHz) 26.5625 25 Output Frequency (MHz) 106.25 100 BLOCK DIAGRAM XTAL_IN PIN ASSIGNMENT VCO 637.5MHz w/ 26.5625MHz Ref. OSC XTAL_OUT Phase Detector ÷6 nQ0 Q0 VCCA VEE XTAL_OUT XTAL_IN 1 2 3 4 8 7 6 5 VCC Q0 nQ0 nc M = ÷24 (fixed) ICS843011 8-Lead TSSOP 4.40mm x...