Clocks & Timing

Overview

The 83PN625I 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 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 83PN625I defaults to 312.5MHz using a 25MHz 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.

83PN625I - Block Diagram
83PN625I - Pinout
83PN625I - Block Diagram
83PN625I - Pinout
  • Fourth Generation FemtoClock® Next Generation (NG) technology
  • Footprint compatible with 5mm x 7mm differential oscillators
  • One differential LVPECL output pair
  • Crystal oscillator interface which can be overdriven by a single-ended reference clock
  • Output frequency range: 125MHz – 625MHz
  • Crystal/input frequency range: 25MHz, parallel resonant crystal
  • VCO range: 2GHz – 2.5GHz
  • Cycle-to-cycle jitter: 10ps (maximum), @ 3.3V±5%
  • RMS phase jitter @ 156.25MHz, 12kHz – 20MHz: 0.348ps (typical)
  • Full 3.3V or 2.5V operating supply
  • -40°C to 85°C ambient operating temperature
  • Available in a lead-free (RoHS 6) package

Documentation

Title Type Date
ICS83PN625I Datasheet
PDF352 KB
Datasheet
AN-805 Recommended Ferrite Beads
PDF91 KB
Application Note
AN-827 Application Relevance of Clock Jitter
PDF1.99 MB
Application Note
AN-828 Termination - LVPECL
PDF322 KB
Application Note
AN-831 The Crystal Load curve
PDF395 KB
Application Note
AN-844 Termination - AC Coupling Clock Receivers
PDF170 KB
Application Note
AN-842 Thermal Considerations in Package Design and Selection
PDF495 KB
Application Note
AN-840 Jitter Specifications for Timing Signals
PDF442 KB
Application Note
AN-838 Peak-to-Peak Jitter Calculations
PDF115 KB
Application Note
AN-839 RMS Phase Jitter
PDF233 KB
Application Note
AN-832 Timing Budget and Accuracy
PDF131 KB
Application Note
AN-834 Hot-Swap Recommendations
PDF153 KB
Application Note
AN-835 Differential Input with VCMR being VIH Referenced
PDF160 KB
Application Note
AN-836 Differential Input to Accept Single-ended Levels
PDF120 KB
Application Note
AN-837 Overdriving the Crystal Interface
PDF133 KB
Application Note
AN-830 Quartz Crystal Drive Level
PDF143 KB
Application Note
AN-815 Understanding Jitter Units
PDF565 KB
Application Note
AN-802 Crystal-Measuring Oscillator Negative Resistance
PDF136 KB
Application Note
AN-801 Crystal-High Drive Level
PDF202 KB
Application Note
AN-806 Power Supply Noise Rejection
PDF438 KB
Application Note
AN-803 Crystal Timing Budget and Accuracy for Renesas Timing Clock Products
PDF108 KB
Application Note
Errata# NEN-11-03
PDF62 KB
Device Errata
PDN# : CQ-16-04 QUARTER MARKET DECLINED PDN
PDF560 KB
End Of Life Notice
IDT Clock Generation Overview
PDF1.83 MB
Overview
PCN# : W1308-01 Change of Passivation Thickness
PDF941 KB
Product Change Notice

Design & Development

Software Downloads

Title Type Date
PDN# : CQ-16-04 QUARTER MARKET DECLINED PDN
PDF560 KB
End Of Life Notice

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Explore ECAD Models

Models

Title Type Date
83PN625I IBIS Model
ZIP70 KB
Model - IBIS

Product Options

    Processing table
    Part Number
    Pkg. Type
    Lead Count (#)
    Temp. Grade
    Pb (Lead) Free
    Carrier Type
    Buy / Sample
    83PN625DKILF
    block_flippedObsolete
    memory
    view_in_ar
    		VFQFPN 10 I Yes Tray
    83PN625DKILFT
    block_flippedObsolete
    memory
    view_in_ar
    		VFQFPN 10 I Yes Reel
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