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Spread Spectrum PLL


The IDT5P50901/2/3/4 is a family of 1.8V low power, spread spectrum clock generators capable of reducing EMI radiation from an input clock. Spread spectrum technique is capable of reducing the harmonic frequency amplitude peaks by several dB. The IDT5P50902 accepts an input clock frequency from 20 MHz to 50 MHz and produces an output clock of the same frequency, with a modulation frequency of ICLK*27/20000. The spread amount can be chosen through the select pins on the device. 


  • 8-pin DFN package (2x2mm)
  • 8-pin MSOP package (3x4.9mm)
  • Provides a spread spectrum output clock
  • Input frequency range of 20 to 50 MHz
  • Modulation Frequency is ICLK*27/20000
  • Output frequency range of 20 to 50 MHz
  • Center and down spread
  • Peak reduction by 8 dB to 16 dB typical on 3rd through 19th odd harmonics 
  • Low EMI feature can be disabled 
  • Operating voltage of 1.8 V, 2.5 or 3.3V 
  • RoHS 6 compliant package

Product Specification

Core Voltage (V)Input Freq (MHz)Output Freq Range (MHz)Chipset Manufacturer
1.8, 2.5, 3.320.000000 - 50.00000020.000000 - 50.000000

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
5P50902DVGINot Recommended
DVG8TSSOP8IYesTubeCheck Availability
5P50902DVGI8ObsoleteDVG8TSSOP8IYesReelCheck Availability
5P50902NBGIActiveNBG8VFQFPN8IYesCanCheck Availability
5P50902NBGI8ActiveNBG8VFQFPN8IYesReelCheck Availability


Technical Documentation

Title Other Languages Type Format File Size Datesort icon
Datasheets & Errata
5P50901-2-3-4 Datasheet Datasheet PDF 128 KB Aug 21, 2012
Apps Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB May 13, 2014
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB May 12, 2014
show all (9)
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB May 8, 2014
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 32 KB May 7, 2014
AN-839 RMS Phase Jitter Application Note PDF 149 KB May 7, 2014
AN-815 Understanding Jitter Units Application Note PDF 476 KB Apr 24, 2014
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB Apr 24, 2014
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB Jan 15, 2014
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 25, 2016