Differential-to-0.7V Differential PCI Express ICS871S1022 Jitter Attenuator DATASHEET Description Features IDTs PLL-based clock generators offer sub-picosecond jitter, Four 0.7V differential output pairs low-skew clock outputs, and edge rates that meet the ever-growing One differential clock input pair demands of todays networking solutions. CLK, nCLK pair can accept the following differential The ICS871S1022 is a PLL-based clock generator specifically input levels: LVPECL, LVDS, LVHSTL, HCSL designed for PCI Express Clock Generation applications. The device Crystal oscillator interface designed for 25MHz, 18pF parallel generates 100MHz, 125MHz, 250MHz or 500MHz from either a resonant crystal 25MHz fundamental mode crystal or a 100MHz recovered clock. RMS phase jitter at 100MHz, using a 25MHz crystal (12kHz 20MHz): 0.608ps (typical) The ICS871S1022 has two modes of operation: (1) high frequency jitter attenuator and (2) high performance clock synthesizer mode. High frequency jitter attenuator mode has high PLL bandwidth which allows for better input tracking When in jitter attenuator mode, the ICS871S1022 is able to both suppress high frequency noise components and function as a Supports PCI Express Spread-Spectrum Clocking frequency translator. Designed to receive a jittery and noisy clock PCI Express Gen 1, 2 and 3 jitter compliant from an external source, the ICS871S1022 uses FemtoClock 3.3V operating supply voltage technology to clean up the incoming clock and translate the frequency to one of the four common PCI Express frequencies. 0C to 70C ambient operating temperature When in synthesizer mode, the device is able to generate high Available in lead-free (RoHS 6) package performance SSC and non-SSC clocks from a low cost external, 25MHz, fundamental mode crystal. The ICS871S1022 uses FemtoClock technology to generate low noise clock outputs capable of providing the seed frequencies for the common PCI Express link rates. Pin Assignment 32-Lead VFQFN 5mm x 5mm x 0.925mm package body K Package Top View ICS871S1022EK November 2, 2017 1 2017 Integrated Device Technology, Inc.ICS871S1022 Datasheet DIFFERENTIAL-TO-0.7V DIFFERENTIAL PCI EXPRESS JITTER ATTENUATOR Block Diagram 100MHz ICS871S1022EK November 2, 2017 2 2017 Integrated Device Technology, Inc.