PCI Express® Jitter Attenuator

The 874001I-02 is a high performance Jitter Attenuator designed for use in PCI Express®™ systems. 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 874001I-02 has two different PLL bandwidth modes: 2MHz and 3MHz. The 2MHz mode will provide maximum jitter attenuation, but with higher PLL tracking skew and spread spectrum modulation from the motherboard synthesizer may be attenuated. The 3MHz bandwidth provides the best tracking skew and will pass most spread profiles, but the jitter attenuation will not be as good as the lower bandwidth mode. The 874001I-02 can be set for different modes using the F_SELx pins, as shown in Table 3C. The 874001I-02 uses IDT's 3RD Generation FemtoClock® PLL technology to achieve 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, nCLK can accept the following differential input levels: LVPECL, LVDS, LVHSTL, HCSL, SSTL
  • Input frequency range: 98MHz to 128MHz
  • Output frequency range: 98MHz to 640MHz
  • VCO range: 490MHz - 640MHz
  • Cycle-to-cycle jitter: 15ps (maximum), 3.3V
  • RMS period jitter: 3ps (maximum), 3.3V
  • Two bandwidth modes allow the system designer to make jitter attenuation/tracking skew design trade-offs
  • Full 3.3V or 2.5V operating supply
  • -40°C to 85°C ambient operating temperature
  • Available in lead-free (RoHS 6) package

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
874001AGI-02LF Active PGG20 TSSOP 20 I Yes Tube Availability
874001AGI-02LFT Active PGG20 TSSOP 20 I Yes Reel Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
874001I-02 Datasheet Datasheet PDF 853 KB Sep 1, 2010
PCNs & PDNs
PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB Apr 13, 2016
PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB Feb 14, 2016
PCN# : A1511-01(R1) Add SPEL India as Alternate Assembly Location Product Change Notice PDF 596 KB Jan 27, 2016
PCN# : A1511-01 Add SPEL India as Alternate Assembly Location Product Change Notice PDF 544 KB Nov 12, 2015
PCN# : TB1504-01R1 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 95 KB Oct 21, 2015
PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 50 KB Jul 20, 2015
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB Mar 23, 2013
Other
IDT PCI Express Solutions Overview 日本語, 简体中文 Overview PDF 768 KB Apr 19, 2017

Software & Tools

Title Other Languages Type Format File Size Date
874001I-02 IBIS Model Model - IBIS ZIP 41 KB Sep 13, 2011