Overview

The 9EX21801 provides 18 output clocks for PCIe Gen2 (100MHz) or QPI (133MHz) applications. The 9EX21801 has 4 selectable SMBus addresses, and dedicated CKPWRGD/PD# and VDDA pins for easy board design. A differential CPU clock from a CK410B+ main clock generator, such as the 932S421, drives the 9EX21801. In fanout mode, the 9EX21801 provides outputs up to 400MHz.

9EX21801A - Block Diagram
9EX21801A - Pinout
9EX21801A - Block Diagram
9EX21801A - Pinout
  • DIF output cycle-to-cycle jitter < 50ps
  • DIF output-to-output skew < 150 ps
  • PCIe Gen2 compliant phase noise
  • QPI 133MHz compliant phase noise
  • Supports output clock frequencies up to 400 MHz
  • 4 Selectable SMBus addresses
  • SMBus address is independent of PLL operating mode
  • Dedicated CKPWRGD/PD# and VDDA pins ease board design
  • Available in industrial temperature range (-40°C to +85°C)

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
    9EX21801AKILF
    circleObsolete
    memory
    view_in_ar
    		VFQFPN 72 I Yes Tray
    9EX21801AKILFT
    circleObsolete
    memory
    view_in_ar
    		VFQFPN 72 I Yes Reel
    9EX21801AKLF
    circleObsolete
    memory
    view_in_ar
    		VFQFPN 72 C Yes Tray
    9EX21801AKLFT
    circleObsolete
    memory
    view_in_ar
    		VFQFPN 72 C Yes Reel
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