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MAX3622
Low-Jitter, Precision Clock Generator with Two Outputs

0.14ps Ultra-Low Jitter Clock Generator Eliminates 156.25MHz Crystal Oscillator Module


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Status
Active: In Production.

Description
FULL DATA SHEET (PDF, 208kB)
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The MAX3622 is a low-jitter precision clock generator optimized for networking applications. The device integrates a crystal oscillator and a phase-locked loop (PLL) clock multiplier to generate high-frequency clock outputs for Ethernet and other networking applications.

Maxim's proprietary PLL design features ultra-low jitter (0.36psRMS) and excellent power-supply noise rejection, minimizing design risk for network equipment.

The MAX3622 has one LVPECL output and one LVCMOS output. It is available in a 16-pin TSSOP package and operates over the 0°C to +70°C temperature range.

An evaluation kit is available:  MAX3622EVKIT  

Key Features   Applications/Uses
  • Crystal Oscillator Interface: 25MHz Typical
  • Output Frequencies: 125MHz and 156.25MHz
  • Low Jitter
    • 0.14psRMS (1.875MHz to 20MHz)
    • 0.36psRMS (12kHz to 20MHz)
  • Excellent Power-Supply Noise Rejection
  • No External Loop Filter Capacitor Required

 
  • Ethernet Networking Equipment

    Key Specifications:  Clock Generators
    Part Number Applications fIN
    (MHz)
    fIN
    (MHz)
    fOUT
    (MHz)
    fOUT
    (MHz)
    Fixed or Continuous Frequency Output Levels Out-
    puts
    PLLs Spread Spectrum Output Jitter
    (ps)
    VSUPPLY
    (V)
    Package/Pins
    min max min max RMS
    MAX3622  Ethernet 25 25 125 156.25 Fixed
    LVCMOS
    LVPECL
    2 1 No 0.14 3.3
    TSSOP/16
    See All Clock Generators (27)

    Diagram
    MAX3622: Block Diagram
    Block Diagram

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    Document Ref.: 19-2456; Rev 0; 2007-12-18
    This page last modified: 2009-08-26


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