Overview

The 840002I-01 is a two output LVCMOS/LVTTL Synthesizer optimized to generate Ethernet reference clock frequencies. Using a 25MHz 18pF parallel resonant crystal, the following frequencies can be generated based on the two frequency select pins (F_SEL[1:0]): 156.25MHz, 125MHz, and 62.5MHz. The 840002I-01 uses IDT's 3RD generation low phase noise VCO technology and can achieve 1ps or lower typical random rms phase jitter, easily meeting Ethernet jitter requirements. The 840002I-01 is packaged in a small 16-pin TSSOP package.

840002I-01 - Block Diagram
840002I-01 - Pinout
840002I-01 - Block Diagram
840002I-01 - Pinout
  • Two LVCMOS/LVTTL outputs@ 3.3V, 17Ω typical output impedance
  • Selectable crystal oscillator interface or LVCMOS/LVTTL single-ended TEST_CLK
  • Supports the following output frequencies: 156.25MHz, 125MHz and 62.5MHz
  • Output frequency range: 56MHz to 175MHz
  • VCO range: 560MHz to 700MHz
  • Output skew: 12ps (maximum)
  • RMS phase jitter at 156.25MHz, (1.875MHz to 20MHz): 0.47ps (typical)
    Phase Noise:
    Offset                  Noise Power
    100Hz.................-97.4 dBc/Hz
    1kHz...................-120.2 dBc/Hz
    10kHz.................-127.6 dBc/Hz
    100kHz...............-126.1 dBc/Hz
  • Power Supply Modes:
    Core / Output
    3.3V / 3.3V
    3.3V / 2.5V
    2.5V / 2.5V
  • -40°C to 85°C ambient operating temperature
  • Available in  lead-free (RoHS 6) package

Documentation

Design & Development

ECAD Models

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Product Options

    Processing table
    Pkg. Type
    Lead Count (#)
    Temp. Grade
    Pb (Lead) Free
    Carrier Type
    Buy / Sample
    Part Number
    840002AGI-01LF
    circleObsolete
    memory
    view_in_ar
    		TSSOP 16 I Yes Tube
    840002AGI-01LFT
    circleObsolete
    memory
    view_in_ar
    		TSSOP 16 I Yes Reel
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