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MAX3672
Low-Jitter 155MHz/622MHz Clock Generator


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 500kB)
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Description
The MAX3672 is a low-jitter 155MHz/622MHz reference clock generator IC designed for system clock distribution and frequency synchronization in OC-48 and OC-192 SONET/SDH and WDM transmission systems. The MAX3672 integrates a phase/frequency detector, an operational amplifier (op amp), prescaler dividers, and input/output buffers. Using an external VCO, the MAX3672 can be configured easily as a phase-lock loop with bandwidth programmable from 30Hz to 10kHz.

The MAX3672 operates from a single +3.3V or +5.0V supply and dissipates 150mW (typ) at 3.3V. The operating temperature range is -40°C to +85°C.

Key Features   Applications/Uses
  • Single +3.3V or +5.0V Supply
  • Power Dissipation: 150mW at +3.3V Supply
  • External VCO Center Frequencies (fVCO): 155MHz to 700MHz
  • Reference Clock Frequencies: fVCO, fVCO/2, fVCO/4, fVCO/8, fVCO/32
  • Main Clock Output Frequency: fVCO
  • Optional Output Clock Frequencies: fVCO, fVCO/2, fVCO/4, fVCO/8
  • Low Intrinsic Jitter: <0.4psRMS
  • Loss-of-Lock Indicator
  • PECL Clock Output Interface

 
  • Clock Jitter Clean-Up and Frequency Synchronization
  • Frequency Conversion
  • OC-12 to OC-192 SONET/WDM Transport Systems
  • System Clock Distribution

    Key Specifications:  Clock Generators
    Part Number Applications fIN
    (MHz)
    fIN
    (MHz)
    fOUT
    (MHz)
    fOUT
    (MHz)
    Fixed or Continuous Frequency Output Levels Out-
    puts
    PLLs Program-
    mability
    Spread Spectrum Output Jitter
    (ps)
    VSUPPLY
    (V)
    Package/Pins
    min max min max RMS
    MAX3672  SONET/SDH 0 155 0 670 Continuous LVPECL 2 1 Pin No 0.2
    3.3
    5
    See Data Sheet/
    See All Clock Generators (27)

    Diagram
    MAX3672: Typical Application Circuit
    Typical Application Circuit

    Reliability Reports
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    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-1 of 1

    MAX3672 Free
    Sample
    Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX3672E/D    
    Active DICE SALES;NA pin;0 mm²

    Land Pattern: Not Applicable
    Use pkgcode/variation: DICE*
    See data sheet

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    Document Ref.: 19-2697; Rev 0; 2003-02-06
    This page last modified: 2007-08-02


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