Overview

The 9FGL839 is an 8 output differential synthesizer for PCI Express Gen1, Gen2, and Gen3 applications. It has integrated terminations providing direction connection to 100 ohm transmission lines and saving 32 resistors compared to standard HCSL outputs. The 9FGL839 supports Common, Data and Separate Reference no-Spread (SRnS) PCIe clock architectures.
9FGL839 Block Diagram
9FGL839 Pinout
9FGL839 Block Diagram
9FGL839 Pinout
  • Integrated terminations; save 32 resistors compared to standard HCSL outputs
  • LP-HCSL outputs; support separate VDDIO rail and 130mW typical power consumption
  • 8 OE# pins; Hardware control of each output
  • 25 MHz crystal input; exact synthesis
  • 100 MHz operation; supports PCIe and SATA applications
  • VDDIO; allows outputs to run from lower voltage rail to save power
  • OE# pins have 1.5V high input threshold; direct interface to 1.8-3.3 V systems
  • <130 mW power consumption (typical)
  • Cycle-to-cycle jitter <50 ps
  • Output-to-output skew <100 ps
  • PCIe Gen2 phase jitter <3.0 ps RMS
  • PCIe Gen3 phase jitter <1.0 ps RMS
  • PCIe Gen3 SRnS clock phase jitter <0.7 ps RMS

Documentation

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

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Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Lead Count (#)
    Temp. Grade
    Pb (Lead) Free
    Carrier Type
    Buy / Sample
    Part Number
    9FGL839AKILF
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    view_in_ar
    		VFQFPN 48 I Yes Tray
    9FGL839AKILFT
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    view_in_ar
    		VFQFPN 48 I Yes Reel
    9FGL839AKLF
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    view_in_ar
    		VFQFPN 48 C Yes Tray
    9FGL839AKLFT
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    memory
    view_in_ar
    		VFQFPN 48 C Yes Reel
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