Overview

The M902-01 is a PLL (Phase Locked Loop) based clock generator that uses an internal VCSO (Voltage Controlled SAW Oscillator) to produce a very low jitter output clock. It is ideal for Gigabit Ethernet. The output clock (frequency of 156.25 or 187.50MHz for example) is provided from two LVPECL clock output pairs. (Specify frequency at time of order.) The accuracy of the output frequency is assured by the internal PLL, which phase-locks the internal VCSO to the reference input frequency (25 or 30MHz for example). The input reference can either be an external crystal, utilizing the internal crystal oscillator, or a stable external clock source such as a packaged crystal oscillator.
  • Output clock frequency from 125MHz to 190MHz (Consult factory for frequency availability)
  • Two identical LVPECL output pairs
  • Integrated SAW (surface acoustic wave) delay line
  • Low jitter 0.5ps rms (over 12kHz-20MHz)
  • Ideal for Gigabit Ethernet clock reference
  • Output-to-output skew 100ps
  • External XTAL or LVCMOS reference input
  • Selectable external feed-through clock input
  • STOP clock control (Logic 1 stops output clocks)
  • Industrial temperature grade available
  • Single 3.3V power supply
  • Small 9 x 9 mm SMT (surface mount) package

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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Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Lead Count (#)
    Temp. Grade
    Pb (Lead) Free
    Carrier Type
    Buy / Sample
    Part Number
    M902-01-187.5000
    circleObsolete
    memory
    view_in_ar
    		CLCC 36 C Yes Tube
    M902-01-187.5000T
    circleObsolete
    memory
    view_in_ar
    		CLCC 36 C Yes Reel
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