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ICS871S1022 Datasheet(PDF) 1 Page - Renesas Technology Corp |
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ICS871S1022 Datasheet(HTML) 1 Page - Renesas Technology Corp |
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1 / 23 page  DATASHEET ICS871S1022EK November 2, 2017 1 ©2017 Integrated Device Technology, Inc. Differential-to-0.7V Differential PCI Express™ Jitter Attenuator ICS871S1022 Description IDT’s PLL-based clock generators offer sub-picosecond jitter, low-skew clock outputs, and edge rates that meet the ever-growing demands of today’s networking solutions. The ICS871S1022 is a PLL-based clock generator specifically designed for PCI Express Clock Generation applications. The device generates 100MHz, 125MHz, 250MHz or 500MHz from either a 25MHz fundamental mode crystal or a 100MHz recovered clock. The ICS871S1022 has two modes of operation: (1) high frequency jitter attenuator and (2) high performance clock synthesizer mode. When in jitter attenuator mode, the ICS871S1022 is able to both suppress high frequency noise components and function as a frequency translator. Designed to receive a jittery and noisy clock from an external source, the ICS871S1022 uses FemtoClock® technology to clean up the incoming clock and translate the frequency to one of the four common PCI Express frequencies. When in synthesizer mode, the device is able to generate high 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. Features • Four 0.7V differential output pairs • One differential clock input pair • CLK, nCLK pair can accept the following differential input levels: LVPECL, LVDS, LVHSTL, HCSL • Crystal oscillator interface designed for 25MHz, 18pF parallel resonant crystal • RMS phase jitter at 100MHz, using a 25MHz crystal (12kHz – 20MHz): 0.608ps (typical) • High frequency jitter attenuator mode has high PLL bandwidth which allows for better input tracking • Supports PCI Express Spread-Spectrum Clocking • PCI Express Gen 1, 2 and 3 jitter compliant • 3.3V operating supply voltage • 0°C to 70°C ambient operating temperature • Available in lead-free (RoHS 6) package Pin Assignment 32-Lead VFQFN 5mm x 5mm x 0.925mm package body K Package Top View |
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