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.

To see other devices in this product family, visit the Universal Frequency Translators page.

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 Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
8T49N222B-000NLGI Active NLG48P1 VFQFPN 48 I Yes Tray
Availability
8T49N222B-100NLGI Active NLG48P1 VFQFPN 48 I Yes Tray
Availability
8T49N222B-100NLGI8 Active NLG48P1 VFQFPN 48 I Yes Reel
Availability
8T49N222B-101NLGI Active NLG48P1 VFQFPN 48 I Yes Tray
Availability
8T49N222B-101NLGI8 Active NLG48P1 VFQFPN 48 I Yes Reel
Availability
8T49N222B-108NLGI Active NLG48P1 VFQFPN 48 I Yes Tray
Availability
8T49N222B-108NLGI8 Active NLG48P1 VFQFPN 48 I Yes Reel
Availability
8T49N222B-109NLGI Active NLG48P1 VFQFPN 48 I Yes Tray
Availability
8T49N222B-109NLGI8 Active NLG48P1 VFQFPN 48 I Yes Reel
Availability
8T49N222B-110NLGI Active NLG48P1 VFQFPN 48 I Yes Tray
Availability
8T49N222B-110NLGI8 Active NLG48P1 VFQFPN 48 I Yes Reel
Availability
8T49N222B-999NLGI Active NLG48P1 VFQFPN 48 I Yes Tray
Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
8T49N222I Datasheet Datasheet PDF 683 KB
User Guides & Manuals
FemtoNG Universal Frequency Translator Ordering Product Information Guide Manual - User Reference PDF 447 KB
Application Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 229 KB
AN-831 The Crystal Load curve Application Note PDF 308 KB
AN-846 Termination - LVDS Application Note PDF 50 KB
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB
AN-835 Differential Input with VCMR being VIH Referenced Application Note PDF 77 KB
AN-803 Crystal Timing Budget and Accuracy for IDT Timing Clock Products Application Note PDF 44 KB
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB
AN-839 RMS Phase Jitter Application Note PDF 149 KB
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 32 KB
AN-834 Hot-Swap Recommendations Application Note PDF 67 KB
AN-833 Differential Input Self Oscillation Prevention Application Note PDF 94 KB
AN-837 Overdriving the Crystal Interface Application Note PDF 50 KB
AN-836 Differential Input to Accept Single-ended Levels Application Note PDF 37 KB
AN-832 Timing Budget and Accuracy Application Note PDF 48 KB
AN-830 Quartz Crystal Drive Level Application Note PDF 59 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB
AN-815 Understanding Jitter Units Application Note PDF 476 KB
AN-802 Crystal-Measuring Oscillator Negative Resistance Application Note PDF 52 KB
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB
AN-801 Crystal-High Drive Level Application Note PDF 109 KB
AN-806 Power Supply Noise Rejection Application Note PDF 353 KB
PCNs & PDNs
PCN# : A1904-01 Add Greatek, Taiwan as an Alternate Assembly Facility Product Change Notice PDF 983 KB
PCN# : A1611-02 Add JCET China as Alternate Assembly and Change of Material Set at Alternate Assembly Location Product Change Notice PDF 583 KB
PCN# : W1308-01 Change of Passivation Thickness Product Change Notice PDF 941 KB
Other
Timing Solutions Products Overview Overview PDF 4.11 MB
IDT Products for Radio Applications 日本語 Product Brief PDF 2.34 MB
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB
IDT Clock Distribution Overview 日本語 Overview PDF 3.79 MB
Timing Fabric for Communications Equipment Overview Overview PDF 263 KB

Software & Tools

Title Other Languages Type Format File Size Date
8T49N222I IBIS Model Model - IBIS ZIP 205 KB