FemtoClock® Crystal-to-LVDS/LVCMOS Frequency

8402015I is a low phase noise Clock Synthesizer and is a member of the high performance clock solutions from IDT. The device provides three banks of outputs and a reference clock. Each bank can be enabled by using output enable pins. A 25MHz or 50MHz, 18pF parallel resonant crystal is used to generate 25MHz LVCMOS, 125MHz LVCMOS and 125MHz LVDS outputs. 8402015I is packaged in a small, 32-pin VFQFN package that is optimum for applications with space limitations.

Features

  • Three banks of outputs: Bank A: three single-ended LVCMOS/LVTTL outputs at 25MHz or 50MHz Bank B: three single-ended LVCMOS/LVTTL outputs at 125MHz Bank C: three differential LVDS outputs at 125MHz Reference LVCMOS/LVTTL output at 25MHz
  • Crystal input frequency: 25MHz
  • Maximum output frequency: 125MHz
  • RMS phase jitter @ 125MHz, using a 25MHz crystal (637kHz - 62.5MHz): 0.373ps (typical) LVDS output
  • RMS phase jitter @ 25MHz, using a 25MHz crystal (12kHz - 1MHz): 0.64ps (typical) LVCMOS output
  • Full 3.3V supply mode
  • -40°C to 85°C ambient operating temperature
  • Available in lead-free (RoHS 6) package

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
8402015AKILF Active NLG32P1 VFQFPN 32 I Yes Tray Availability
8402015AKILF/W Active NLG32P1 VFQFPN 32 I Yes Reel Availability
8402015AKILFT Active NLG32P1 VFQFPN 32 I Yes Reel Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
8402015i Final Data Sheet Datasheet PDF 275 KB Jul 1, 2015
Application Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
AN-831 The Crystal Load curve Application Note PDF 308 KB Sep 22, 2014
AN-846 Termination - LVDS Application Note PDF 50 KB May 12, 2014
AN-845 Termination - LVCMOS Application Note PDF 62 KB May 12, 2014
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB May 11, 2014
AN-803 Crystal Timing Budget and Accuracy for IDT Timing Clock Products Application Note PDF 44 KB May 7, 2014
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB May 7, 2014
AN-839 RMS Phase Jitter Application Note PDF 149 KB May 6, 2014
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 32 KB May 6, 2014
AN-834 Hot-Swap Recommendations Application Note PDF 67 KB May 5, 2014
AN-837 Overdriving the Crystal Interface Application Note PDF 50 KB May 5, 2014
AN-832 Timing Budget and Accuracy Application Note PDF 48 KB May 5, 2014
AN-830 Quartz Crystal Drive Level Application Note PDF 59 KB May 4, 2014
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB Apr 23, 2014
AN-815 Understanding Jitter Units Application Note PDF 476 KB Apr 23, 2014
AN-802 Crystal-Measuring Oscillator Negative Resistance Application Note PDF 52 KB Mar 11, 2014
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB Jan 14, 2014
AN-801 Crystal-High Drive Level Application Note PDF 109 KB Jan 14, 2014
AN-806 Power Supply Noise Rejection Application Note PDF 353 KB Jan 14, 2014
PCNs & PDNs
PCN# : A1611-02 Add JCET China as Alternate Assembly and Change of Material Set at Alternate Assembly Location Product Change Notice PDF 583 KB Dec 19, 2016
PCN# : A1511-01(R1) Add SPEL India as Alternate Assembly Location Product Change Notice PDF 596 KB Jan 27, 2016
PCN# : A1511-01 Add SPEL India as Alternate Assembly Location Product Change Notice PDF 544 KB Nov 12, 2015
Other
The IDT Communications Products Advantage Overview PDF 4.00 MB Mar 21, 2018
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB Apr 28, 2016
IDT Clock Distribution Overview 日本語 Overview PDF 3.79 MB Apr 24, 2016