ICS874001I-05

www.DataSheet4U.com PCI EXPRESS™ JITTER ATTENUATOR ICS874001I-05 GENERAL DESCRIPTION The ICS874001I-05 is a high performance Jitter IC S Attenuator designed for use in PCI Express™ sysHiPerClockS™ tems. In some PCI Express systems, such as those found in desktop PCs, the PCI Express clocks are generated from a low bandwidth, high phase noise PLL frequency synthesizer. In these systems, a jitter attenuator may be required to attenuate high frequency random and deterministic jitter components from the PLL synthesizer and from the system board. The ICS874001I-05 has a bandwidth of 6MHz with <1dB peaking, easily meeting PCI Express Gen2 PLL requirements. The ICS874001I-05 uses IDT’s 3rd Generation FemtoClock TM PLL technology to achive the lowest possible phase noise. The device is packaged in a small 20-pin TSSOP package, making it ideal for use in space constrained applications such as PCI Express add-in cards. FEATURES One differential LVDS output pair One differential clock input CLK and nCLK supports the following input types: LVPECL, LVDS, LVHSTL, SSTL, HCSL Output frequency range: 98MHz - 640MHz Input frequency range: 98MHz - 128MHz VCO range: 490MHz - 640MHz Cycle-to-cycle jitter: 50ps (maximum) 3.3V operating supply PCI Express (2.5Gb/s) and Gen 2 (5 Gb/s) jitter compliant -40°C to 85°C ambient operating temperature Available in lead-free (RoHS 6) package PIN ASSIGNMENT PLL_SEL nc nc nc MR nc F_SEL1 VDDA F_SEL0 VDD 1 2 3 4 5 6 7 8 9 10 20 19 18...