FemtoClock Crystal-to-3.3V LVPECL ICS843011C Clock Generator DATA SHEET GENERAL DESCRIPTION FEATURES The ICS843011C is a Fibre Channel Clock Generator. The One differential 3.3V LVPECL output ICS843011C uses a 26.5625MHz crystal to synthesize Crystal oscillator interface designed for 26.5625MHz, 106.25MHz or a 25MHz crystal to synthesize 100MHz. The 18pF parallel resonant crystal ICS843011C has excellent <1ps phase jitter performance, over the 637kHz 10MHz integration range. The ICS843011C is Output frequency: 106.25MHz or 100MHz packaged in a small 8-pin TSSOP, making it ideal for use in VCO range: 560MHz - 680MHz systems with limited board space. RMS phase jitter 100MHz, using a 25MHz crystal (637kHz - 10MHz): 0.29ps (typical) 3.3V operating supply 0C to 70C ambient operating temperature Available in lead-free (RoHS 6) packaging FREQUENCY TABLE Crystal (MHz) Output Frequency (MHz) 26.5625 106.25 25 100 BLOCK DIAGRAM PIN ASSIGNMENT VCCA 1 8 VCC VCO XTAL IN Q VEE 2 7 Q Phase OSC 6 XTAL OUT nQ 3 6 Detector nQ 637.5MHz w/ XTAL OUT 26.5625MHz Ref. XTAL IN 4 5 nc ICS843011C M = 24 (fixed) 8-Lead TSSOP 4.40mm x 3.0mm x 0.925mm package body G Package Top View ICS843011CG REVISION A MARCH 12, 2014 1 ICS843011C Data Sheet FEMTOCLOCK CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR TABLE 1. PIN DESCRIPTIONS Number Name Type Description 1V Power Analog supply pin. CCA 2V Power Negative supply pin. EE 3, XTAL OUT, Crystal oscillator interface. XTAL IN is the input, Input 4 XTAL IN XTAL OUT is the output. 5 nc Unused No connect. 6, 7 nQ, Q Output Differential clock outputs. LVPECL interface levels. 8V Power Core supply pin. CC ICS843011CG REVISION A MARCH 12, 2014 2