NJU7181 Series
Signal Level Sensor System

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  • Description

    The NJU7181 is a signal level sensor system IC. It sends a High flag to the microprocessor or other equipments whenever it detects the existence of the audio signal.The NJU7181 includes a delay circuit which allows the IC continue to hold the flag after the absence of the audio signal. This holding time can be adjusted with external capacitor.Together with its adjustable Input Sensitivity (by external resistor) & its characteristic of low current consumption and low operating voltage, NJU7181 is suitable for Eco-Design of Energy-using Products and for battery operated applications.


    • Power Saving for battery operated devices
    • Muting Application
    • Memory saving for recording devices
    • Half- duplex transmission application

  • Spec
    Supply Voltage 0.9V to 5.5V
    Operating Current Typ. 55µA
    Structure CMOS Technology
    Wide Operating Temperature -40℃ to +85℃
    Junction Temp. +125℃
    Package DFN8-U1(ESON8-U1),MSOP8(TVSP8)
    Note Delay circuit for long Recovery time
    Adjustable Recovery time by external capacitor
    Adjustable Input Sensitivity by external resistance
  • 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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