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

The 840051 is a Gigabit Ethernet Clock Generator and a member of the family of high performance devices from IDT. The 840051 can synthesize 10 Gigabit Ethernet, SONET, or Serial ATA reference clock frequencies with the appropriate choice of crystal and output divider. The 840051 has excellent phase jitter performance and is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space.

Features

  • 1 LVCMOS/LVTTL output, 15? output impedance
  • Crystal oscillator interface designed for 18pF parallel resonant crystals
  • Output frequency range: 70MHz - 170MHz
  • VCO range: 560MHz - 680MHz
  • RMS phase jitter at 155.52MHz (1.875MHz - 20MHz): 0.48ps (typical)
  • RMS phase noise at 155.52MHz
    Offset Noise Power
       100Hz ............... -99.7 dBc/Hz
        1KHz ................ -120 dBc/Hz
      10KHz ................ -128 dBc/Hz
    100KHz ................ -127 dBc/Hz
  • 3.3V operating supply
  • 0°C to 70°C ambient operating temperature
  • Lead-Free fully RoHS compliant
  • Industrial temperature information available upon request

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
840051AGLF Last Time Buy PGG8 TSSOP 8 C Yes Tube
Availability
840051AGLFT Last Time Buy PGG8 TSSOP 8 C Yes Reel
Availability

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
840051 Datasheet Datasheet PDF 231 KB
Application Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 322 KB
AN-831 The Crystal Load curve Application Note PDF 395 KB
AN-845 Termination - LVCMOS Application Note PDF 146 KB
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 170 KB
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 495 KB
AN-840 Jitter Specifications for Timing Signals Application Note PDF 442 KB
AN-803 Crystal Timing Budget and Accuracy for IDT Timing Clock Products Application Note PDF 128 KB
AN-839 RMS Phase Jitter Application Note PDF 233 KB
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 115 KB
AN-837 Overdriving the Crystal Interface Application Note PDF 133 KB
AN-834 Hot-Swap Recommendations Application Note PDF 153 KB
AN-832 Timing Budget and Accuracy Application Note PDF 131 KB
AN-830 Quartz Crystal Drive Level Application Note PDF 143 KB
AN-815 Understanding Jitter Units Application Note PDF 565 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.15 MB
AN-802 Crystal-Measuring Oscillator Negative Resistance Application Note PDF 136 KB
AN-806 Power Supply Noise Rejection Application Note PDF 438 KB
AN-805 Recommended Ferrite Beads Application Note PDF 121 KB
AN-801 Crystal-High Drive Level Application Note PDF 202 KB
PCNs & PDNs
PDN# : CQ-19-01(R1) Quarterly Market Declined PDN Product Discontinuation Notice PDF 1014 KB
PDN# : CQ-19-01 Quarterly Market Declined PDN Product Discontinuation Notice PDF 537 KB
PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB
PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB
PCN# : A1511-01(R1) Add SPEL India as Alternate Assembly Location Product Change Notice PDF 596 KB
PCN# : A1511-01 Add SPEL India as Alternate Assembly Location Product Change Notice PDF 544 KB
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB
Downloads
840051 IBIS Model Model - IBIS ZIP 6 KB

Boards & Kits