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8T49N222I - Block Diagram

8T49N222I

FemtoClock NG Universal Frequency Translator

The IDT8T49N222I is a highly flexible FemtoClock® NG general purpose, low phase noise Frequency Translator / Synthesizer with alarm and monitoring functions suitable for networking and communications applications. It is able to generate any output frequency in the 7.68MHz to 1200MHz range. A wide range of input reference clocks and a range of low-cost fundamental mode crystal frequencies may be used as the source for the output frequency.

 

Features

  • Universal Frequency Translator
    • Zero ppm frequency translation
  • Two outputs, individually programmable as LVPECL or LVDS
    • Individually programmable output frequencies: 7.68MHz up to 1200MHz
  • Two differential inputs support the following input types: LVPECL, LVDS, LVHSTL, HCSL
    • Input frequency range: 8kHz to 710MHz
  • Hitless switching between inputs
  • Holdover support in the event both inputs fail
  • One factory-set register configuration for power-up default state
  • RMS phase jitter at 125MHz, using a 40MHz crystal (12kHz - 20MHz):
    • 498fs (typical), Low Bandwidth Mode (FracN)

Product Specification

Phase Jitter Typ RMS (ps)Inputs (#)Input TypeInput Freq (MHz)Outputs (#)Output TypeOutput Voltage (V)Output Freq Range (MHz)App Jitter Compliance
0.3003Crystal, LVPECL, HCSL, HSTL, LVDS0.008000 - 710.0000002LVPECL, LVDS2.5, 3.37.700000 - 1200.000000ITU G.8262

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
8T49N222B-000NLGIActiveNLG48P1VFQFPN48IYesTrayCheck Availability
8T49N222B-100NLGIActiveNLG48P1VFQFPN48IYesTrayCheck Availability
8T49N222B-100NLGI8ActiveNLG48P1VFQFPN48IYesReelCheck Availability
8T49N222B-101NLGIActiveNLG48P1VFQFPN48IYesTrayCheck Availability
8T49N222B-101NLGI8ActiveNLG48P1VFQFPN48IYesReelCheck Availability
8T49N222B-108NLGIActiveNLG48P1VFQFPN48IYesTrayCheck Availability
8T49N222B-108NLGI8ActiveNLG48P1VFQFPN48IYesReelCheck Availability
8T49N222B-109NLGIActiveNLG48P1VFQFPN48IYesTrayCheck Availability
8T49N222B-109NLGI8ActiveNLG48P1VFQFPN48IYesReelCheck Availability
8T49N222B-110NLGIActiveNLG48P1VFQFPN48IYesTrayCheck Availability
8T49N222B-110NLGI8ActiveNLG48P1VFQFPN48IYesReelCheck Availability
8T49N222B-999NLGIActiveNLG48P1VFQFPN48IYesTrayCheck Availability

Documents

Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
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8T49N222I Datasheet Datasheet PDF 683 KB May 14, 2013
User Guides & Manuals
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FemtoNG Universal Frequency Translator Ordering Product Information Guide Manual - User Reference PDF 216 KB Sep 9, 2016
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
show all (22)
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AN-846 Termination - LVDS Application Note PDF 50 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-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB May 8, 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-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-832 Timing Budget and Accuracy Application Note PDF 48 KB May 6, 2014
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AN-833 Differential Input Self Oscillation Prevention Application Note PDF 94 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-835 Differential Input with VCMR being VIH Referenced Application Note PDF 77 KB May 6, 2014
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AN-834 Hot-Swap Recommendations Application Note PDF 67 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-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB Apr 24, 2014
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AN-815 Understanding Jitter Units Application Note PDF 476 KB 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-801 Crystal-High Drive Level Application Note PDF 109 KB Jan 15, 2014
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AN-806 Power Supply Noise Rejection Application Note PDF 353 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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PCN# : W1308-01 Change of Passivation Thickness Product Change Notice PDF 941 KB Sep 11, 2013
Other
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Timing Fabric for Communications Equipment Overview Overview PDF 263 KB Dec 10, 2015

Software & Tools

Title Type Format File Size Datesort icon
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8T49N222I IBIS Model Model - IBIS ZIP 205 KB Nov 24, 2014