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83PN148I - Block Diagram
83PN148I - Pinout


Programmable FemtoClock® NG LVPECL Oscillator Replacement

The 83PN148I is a programmable LVPECL synthesizer that is "forward" footprint compatible with standard 5mm x 7mm oscillators. The device uses IDT's fourth generation FemtoClock® NG technology for an optimum of high clock frequency and low phase noise performance. Forward footprint compatibility means that a board designed to accommodate the crystal oscillator interface and the optional control pins is also fully compatible with a canned oscillator footprint - the canned oscillator will drop onto the 10-VFQFN footprint for second sourcing purposes. This capability provides designers with programability and lead time advantages of silicon/crystal based solutions while maintaining compatibility with industry standard 5mm x 7mm oscillator footprints for ease of supply chain management. Oscillator-level performance is maintained with IDT's 4th Generation FemtoClock® NG PLL technology, which delivers sub 0.5ps rms phase jitter. The 83PN148I defaults to 148.5MHz using a 27MHz crystal with 2 programming pins floating (pulled down/pulled up with internal pullup or pulldown resistors) but can also be set to 4 different frequency multiplier settings to support a wide variety of applications. The below table shows some of the more common application settings.


  • Fourth Generation FemtoClock® Next Generation (NG) technology
  • Footprint compatible with 5mm x 7mm differential oscillators
  • One differential LVPECL output pair
  • Crystal oscillator interface can also be overdriven by a single-ended reference clock
  • Output frequency range: 54MHz -148.5MHz
  • Crystal/input frequency: 27MHz, parallel resonant crystal
  • VCO range: 2GHz - 2.5GHz
  • Cycle-to-cycle jitter: 10ps (maximum), 3.3V±5%
  • RMS phase jitter @ 148.5MHz, 12kHz - 20MHz: 0.332ps (typical)
  • Full 3.3V or 2.5V operating supply
  • -40°C to 85°C ambient operating temperature
  • Available in lead-free (RoHS 6) package

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
83PN148DKILFActiveNRG10VFQFPN10IYesTrayCheck Availability
83PN148DKILFTActiveNRG10VFQFPN10IYesReelCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
ICS83PN148I Datasheet Datasheet PDF 453 KB Nov 19, 2012
Errata# NEN-11-03 Errata PDF 62 KB Apr 15, 2011
PCN# : A1309-01 Changed of Traceability Mark Format Product Change Notice PDF 439 KB Oct 11, 2013
PCN# : W1308-01 Change of Passivation Thickness Product Change Notice PDF 941 KB Sep 11, 2013
PCN# : A1105-04 ADD CRM1076WA AS AN ALTERNATE DIE ATTACH EPOXY Product Change Notice PDF 84 KB Oct 25, 2011

Software & Tools

Title Type Format File Size Datesort icon
83PN148I IBIS Model Model - IBIS ZIP 70 KB Jul 26, 2010