Crystal-to-LVPECL Clock Synthesizer

The 843156I is a high frequency clock generator. The 843156I uses an external 25MHz crystal to synthesize 156.25MHz clock. The 843156I has excellent cycle-to-cycle and RMS period jitter performance. The 843156I operates at full 3.3V and 2.5V, or mixed 3.3V/2.5V operating supplies and is available in a fully RoHS compliant 32-lead VFQFN package.

Features

  • Ten differential LVPECL outputs of 156.25MHz
  • Crystal oscillator interface designed for 18pF, 25MHz parallel resonant crystal
  • Cycle-to-cycle jitter: 40ps (maximum)
  • RMS phase jitter at 156.25MHz (1.875MHz - 20MHz): 0.39ps (typical)
  • Output Duty Cycle: 45% - 55%
  • Full 3.3V and 2.5V, or mixed 3.3V/2.5V supply modes
  • -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
843156AKILF Last Time Buy NLG32P3 VFQFPN 32 I Yes Tray Availability
843156AKILFT Last Time Buy NLG32P3 VFQFPN 32 I Yes Reel Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
ICS843156I Datasheet - Datasheet PDF 273 KB Dec 9, 2012
Apps Notes & White Papers
AN-815 Understanding Jitter Units - Application Note PDF 476 KB Apr 23, 2014
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-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-837 Overdriving the Crystal Interface - Application Note PDF 50 KB May 5, 2014
AN-834 Hot-Swap Recommendations - Application Note PDF 67 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-802 Crystal-Measuring Oscillator Negative Resistance - Application Note PDF 52 KB Mar 11, 2014
AN-827 Application Relevance of Clock Jitter - Application Note PDF 1.06 MB Apr 23, 2014
AN-806 Power Supply Noise Rejection - Application Note PDF 353 KB Jan 14, 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
PCNs & PDNs
PDN# : CQ-16-02 Quarter PDN for Declined Market - Product Discontinuation Notice PDF 592 KB Aug 24, 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
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB Apr 28, 2016
IDT Products for Radio Applications 日本語 Product Brief PDF 2.34 MB Nov 29, 2016
IDT Clock Distribution Overview 日本語 Overview PDF 3.79 MB Apr 24, 2016