Overview

The 843002I-01 is a 2 output LVPECL synthesizer optimized to generate Ethernet reference clock frequencies. Using a 25MHz 18pF parallel resonant crystal, the following frequencies can be generated based on the 2 frequency select pins (F_SEL[1:0]): 156.25MHz, 125MHz, and 62.5MHz. The 843002I- 01 uses IDT's FemtoClock® low phase noise VCO technology and can achieve 1ps or lower typical rms phase jitter, easily meeting Ethernetjitter requirements. The 843002I-01 is packaged in a small 20-pin TSSOP package.

843002I-01 - Block Diagram
843002I-01 - Pinout
843002I-01 - Block Diagram
843002I-01 - Pinout
  • Two 3.3V or 2.5V LVPECL outputs
  • Selectable crystal oscillator interface or LVCMOS/LVTTL single-ended input
  • Supports the following output frequencies: 156.25MHz, 125MHz and 62.5MHz
  • VCO range: 560MHz - 680MHz
  • RMS phase jitter @ 156.25MHz, using a 25MHz crystal (1.875MHz-20MHz): 0.55ps (typical)
  • Output skew: 30ps (maximum)
  • Supply Voltage Modes
    Core/Outputs
    3.3/3.3
    2.5/2.5
  • -40°C to 85°C ambient operating temperature
  • Available in lead-free RoHS-compliant package

Documentation

Design & Development

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.

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Product Options

    Processing table
    Pkg. Type
    Lead Count (#)
    Temp. Grade
    Pb (Lead) Free
    Carrier Type
    Buy / Sample
    Part Number
    843002AGI-01LF
    circleObsolete
    memory
    view_in_ar
    		TSSOP 20 I Yes Tube
    843002AGI-01LFT
    circleObsolete
    memory
    view_in_ar
    		TSSOP 20 I Yes Reel
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