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843004 - Block Diagram
843004 - Pinout

843004

FemtoClock® LVCMOS/Crystal-to-3.3V LVPECL Frequency Synthesizer

Alternative Products
NOTICE - The following device(s) are recommended alternatives:

The 843004 is a 4 output LVPECL synthesizer optimized to generate Fibre Channel reference clock frequencies. Using a 26.5625MHz 18pF parallel resonant crystal, the following frequencies can be generated based on the 2 frequency select pins (F_SEL[1:0]): 212.5MHz, 187.5MHz, 159.375MHz, 156.25, 106.25MHz, and 53.125MHz. The 843004 uses IDT's 3rd generation low phase noise VCO technology and can achieve 1ps or lower typical rms phase jitter, easily meeting Fibre Channel jitter requirements. The 843004 is packaged in a small 24-pin TSSOP package.

Features

  • Four 3.3Vdifferential LVPECL output pairs
  • Selectable crystal oscillator interface or LVCMOS/LVTTL single-ended clock input
  • Supports the following output frequencies: 212.5MHz, 187.5MHz, 159.375MHz, 156.25MHz, 106.25MHz, 53.125MHz
  • VCO range: 560MHz – 680MHz
  • RMS phase jitter @ 212.5MHz, using a 26.5625MHz crystal (637kHz – 10MHz): 0.72ps (typical)
    Offset                   Noise Power
    100Hz ……………. -95.0 dBc/Hz
    1kHz ……………… -114.3 dBc/Hz
    10kHz ……………. -123.8 dBc/Hz
    100kHz ………….. -124.6 dBc/Hz
  • Full 3.3V supply mode
  • -30°C to 85°C ambient operating temperature
  • Available in lead-free (RoHS 6) package

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
843004AGLFLast Time BuyPGG24TSSOP24CYesTubeCheck Availability
843004AGLFTLast Time BuyPGG24TSSOP24CYesReelCheck Availability

Documents

Technical Documentation

Title Other Languages Type Format File Size Datesort icon
Datasheets & Errata
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843004 Datasheet Datasheet PDF 346 KB May 27, 2015
Apps Notes & White Papers
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AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
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AN-831 The Crystal Load curve Application Note PDF 308 KB Sep 22, 2014
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AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB May 13, 2014
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AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB May 12, 2014
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AN-803 Crystal Timing Budget and Accuracy for IDT Timing Clock Products Application Note PDF 44 KB May 8, 2014
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AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB May 8, 2014
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AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 32 KB May 7, 2014
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AN-839 RMS Phase Jitter Application Note PDF 149 KB May 7, 2014
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AN-834 Hot-Swap Recommendations Application Note PDF 67 KB May 6, 2014
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AN-835 Differential Input with VCMR being VIH Referenced Application Note PDF 77 KB May 6, 2014
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AN-832 Timing Budget and Accuracy Application Note PDF 48 KB May 6, 2014
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AN-837 Overdriving the Crystal Interface Application Note PDF 50 KB May 6, 2014
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AN-836 Differential Input to Accept Single-ended Levels Application Note PDF 37 KB May 6, 2014
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AN-830 Quartz Crystal Drive Level Application Note PDF 59 KB May 5, 2014
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AN-815 Understanding Jitter Units Application Note PDF 476 KB Apr 24, 2014
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AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB Apr 24, 2014
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AN-802 Crystal-Measuring Oscillator Negative Resistance Application Note PDF 52 KB Mar 12, 2014
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AN-806 Power Supply Noise Rejection Application Note PDF 353 KB Jan 15, 2014
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AN-801 Crystal-High Drive Level Application Note PDF 109 KB Jan 15, 2014
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AN-805 Recommended Ferrite Beads Application Note PDF 38 KB Jan 15, 2014
PCNs & PDNs
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PDN# : CQ-16-02 Quarter PDN for Declined Market Product Discontinuation Notice PDF 592 KB Aug 25, 2016
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PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB Apr 14, 2016
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PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB Feb 15, 2016
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PCN# : A1511-01(R1) Add SPEL India as Alternate Assembly Location Product Change Notice PDF 596 KB Jan 28, 2016
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PCN# : A1511-01 Add SPEL India as Alternate Assembly Location Product Change Notice PDF 544 KB Nov 13, 2015
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PCN# : TB1504-01R1 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 95 KB Oct 22, 2015
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PCN# : TB1503-01R1 Carrier Tape Standardization for Selective Packages Product Change Notice PDF 333 KB Oct 22, 2015
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PCN# : TB1503-01 Carrier Tape Standardization for Selective Packages Product Change Notice PDF 291 KB Jul 21, 2015
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PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 50 KB Jul 21, 2015
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PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB Mar 24, 2013
Other
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IDT Products for Radio Applications 日本語 Product Brief PDF 4.65 MB Aug 12, 2015

Software & Tools

Title Type Format File Size Datesort icon
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843004 IBIS Model Model - IBIS ZIP 29 KB Feb 6, 2009
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843004I IBIS Model Model - IBIS ZIP 60 KB Feb 6, 2009