Skip to main content


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 IDT5P50903 accepts an input clock frequency from 40 MHz to 10 MHz and produces an output clock of the same frequency, with a modulation frequency of ICLK*27/40000. 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 40 to 100 MHz
  • Modulation Frequency is ICLK*27/40000
  • Output frequency range of 40 to 100 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

Product Specification

Core Voltage (V)Input Freq (MHz)Output Freq Range (MHz)Chipset Manufacturer
1.8, 2.5, 3.340.000000 - 100.00000040.000000 - 100.000000

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
5P50903NBGIObsoleteNBG8VFQFPN8IYesCanCheck Availability
5P50903NBGI8ObsoleteNBG8VFQFPN8IYesReelCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
5P50901-2-3-4 Datasheet Datasheet PDF 128 KB Aug 21, 2012