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MAX3670
Low-Jitter 155MHz/622MHz Clock Generator


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Data Sheet
FULL DATA SHEET (PDF, 852kB)
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Description
The MAX3670 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 MAX3670 integrates a phase/frequency detector, an operational amplifier (op amp), prescaler dividers and input/output buffers. Using an external VCO, the MAX3670 can be configured easily as a phase-lock loop with bandwidth programmable from 15Hz to 20kHz.

The MAX3670 operates from a single +3.3V or +5.0V supply, and dissipates 150mW (typ) at 3.3V. The operating temperature range is from -40°C to +85°C. The chip is available in a 5mm x 5mm, 32-pin QFN package.

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 670MHz
  • Reference Clock Frequencies: fVCO, fVCO/2, fVCO/8
  • 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 (min) (MHz) fIN (max) (MHz) fOUT (min) (MHz) fOUT (max) (MHz) Fixed or Continuous Frequency Output Levels Number of Outputs Number of PLLs Programmability Spread Spectrum Output Jitter (RMS) Supply Voltage (V) Package Price**
    MAX3670 
    SONET/SDH
    0 155 0 670 Continuous LVPECL 2 1 Pin No 0.2 3.3 QFN/32
    THIN QFN/32
    $14.60 @ 1k
    See All Clock Generators (23)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

    Diagram
    MAX3670: Minimal Operating Circuit
    Minimal Operating Circuit

    Application Notes
  • Application Note 462: HFAN-04.0.2: Converting between RMS and Peak-to-Peak Jitter at a Specified BER - MAX3670
  • Application Note 995: MAX3892: 2.7Gbps Transponder Applications Using the MAX3892, MAX3882, and MAX3670 Chipset - MAX3670
  • Application Note 1032: MAX3670: Loop-Filter Configuration for the MAX3670 Low-Jitter PLL Reference Clock Generator - MAX3670
  • Application Note 1078: MAX3670: Loop Bandwidth Calculator for the MAX3670 - MAX3670
  • Application Note 3258: HFTA-08.0: Receivers and Transmitters in DWDM Systems - MAX3670
  • Application Note 3766: HFTA-12.0: Measuring Crosstalk Penalty in High-Speed Bidirectional Serial Communication Modules - MAX3670

    Evaluation Kits
  • MAX3670EVKIT

    Design Guides
  • Fiber (PDF)

    Reliability Reports
  • Show FIT data for:
  • Reliability Report: MAX3670EGJ.pdf

    Software/Models
  • MAX3670EGJ IBIS Model

    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: 1-4 of 4

    MAX3670 Free
    Sample
    Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX3670EGJ  
    QFN;32 pin;
    Dwg: 21-0091 (PDF)
    Use pkgcode/variation: G3255-1*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX3670EGJ-T  
    QFN;32 pin;
    Dwg: 21-0091 (PDF)
    Use pkgcode/variation: G3255-1*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX3670ETJ+  
    THIN QFN;32 pin;
    Dwg: 21-0140 (PDF)
    Use pkgcode/variation: T3255+3*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX3670ETJ+T  
    THIN QFN;32 pin;
    Dwg: 21-0140 (PDF)
    Use pkgcode/variation: T3255+3*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    More Information
  • New Product Press Release 2001-11-28 
  • Loop Bandwidth Calculator

    Related Products
    MAX3880 +3.3V, 2.488Gbps, SDH/SONET 1:16 Deserializer with Clock Recovery
    MAX3890 +3.3V, 2.5Gbps, SDH/SONET 16:1 Serializer with Clock Synthesis and LVDS Inputs

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     Description 
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    Document Ref.: 19-2166; Rev 1; 2004-05-19
    This page last modified: 2007-07-02



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