NJM2555 Series

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  • Description

    The NJM2555 is a 622.08MHz VCXO (Voltage Controlled Crystal Oscillator) IC designed for optical fiber telecommunication systems,using NewJRC superior Bipolar technology,which consists of an oscillation amplifier,a variable capacitor diode,a quadruple (×4) frequency circuit,high pass filter,and limiter amplifier. The NJM2555 generate x4 frequency to add the only 155.52MHz crystal and LC filter,and the output is differential LVPECL equivalent. The recommended input crystal frequency is from 120 to 160 MHz. The jitter performance and phase noise is very low based on excellent oscillation circuit. This can be applied to optical communication,especially the WDM system.

  • Spec
    Supply Voltage 3.0V to 3.6V
    Operating Current 50mA(typ.) @3.3V
    Frequency Range 120(240)MHz to 160(640)MHz
    Structure Bipolar Technology
    Wide Operating Temperature -40℃ to +85℃
    Junction Temp. +125℃
    Package Chip
    Frequency range of Crystal 155.52 MHz typ.(120 to 160 MHz)
    Output Frequency Range 480 to 640 MHz
    Output Level differential LVPECL equivalent
    Note A Variable Capacitor on chip
  • Technical
  • Quality &
    • Refer to the datasheets for the details on the product.
    • The package file or the datasheet includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.

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Functional Description

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