PCI Express® Jitter Attenuator

The 874005-04 is a high performance Differential- to-LVDS 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 874005-04 has 2 PLL bandwidth modes: 300kHz and 2MHz. The 300kHz mode will provide maximum jitter attenuation, but higher PLL tracking skew and spread spectrum modulation from the motherboard synthesizer may be attenuated. The 2MHz bandwidth provides the best tracking skew and will pass most spread profiles. The 874005-04 supports Serdes reference clock frequencies of 100MHz, 125MHz and 250MHz. The 874005-04 uses IDT's 3rd Generation FemtoClockTM PLL technology to achive the lowest possible phase noise. The device is packaged in a 24 Lead TSSOP package, making it ideal for use in space constrained applications such as PCI Express® add-in cards.

Features

  • Five differential LVDS output pairs
  • One differential clock input
  • Supports 100MHz, 125MHz, and 250MHz Serdes reference clocks
  • CLK and nCLK supports the following input types: LVPECL, LVDS, LVHSTL, SSTL, HCSL
  • Output frequency range: 98MHz - 320MHz
  • Input frequency range: 98MHz - 128MHz
  • PCI Express® (2.5 Gb/S) and Gen 2 (5 Gb/s) jitter compliant
  • RMS phase jitter @ 100MHz (1.875MHz - 20MHz): 0.88ps (typical)
  • VCO range: 490MHz - 640MHz
  • Cycle-to-cycle jitter: 35ps (maximum) QA = QB = ÷4
  • 3.3V operating supply
  • Two bandwidth modes allow the system designer to make jitter attenuation/tracking skew design trade-offs
  • 0°C to 70°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
874005AG-04LF Active PGG24 TSSOP 24 C Yes Tube Availability
874005AG-04LFT Active PGG24 TSSOP 24 C Yes Reel Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
874005-04 Datasheet Datasheet PDF 169 KB Jan 25, 2016
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# : TB1503-01R1 Carrier Tape Standardization for Selective Packages Product Change Notice PDF 333 KB Oct 21, 2015
PCN# : TB1504-01R1 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 95 KB Oct 21, 2015
PCN# : TB1503-01 Carrier Tape Standardization for Selective Packages Product Change Notice PDF 291 KB Jul 20, 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

Software & Tools

Title Other Languages Type Format File Size Date
874005_04 IBIS Model Model - IBIS ZIP 37 KB Oct 28, 2009