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    The SGM8140 is a PIR sensor and vibration sensor analog front end which consists of 2 independent building block circuits. One is a dual rail-to-rail input and output operational amplifier, and the other is an ultra-low power comparator. Both the operational amplifier and the comparator have been specifically designed to operate over a wide range of voltages from 1.4V to 5.5V. The SGM8140 only has 1.1μA working current, so it is ideal for use in a variety of battery-powered applications.

    The operational amplifier circuit is guaranteed to operate with a single supply voltage as low as 1.4V. It has a gain-bandwidth product of 5kHz (TYP) and is unity-gain stable. These specifications make this operational amplifier appropriate for low frequency applications, such as battery current monitoring and sensor conditioning.

    Featuring a push-pull output stage, the SGM8140’s comparator allows for operation with absolute minimum power consumption when driving any capacitive or resistive load.

    The SGM8140 is specified for the -40 to +85℃ industrial temperature range. The SGM8140 is available in a Green TQFN-4×4-16L package.



    • Ultra Low Power: 1.1μA (TYP) at VS = 5V

    • Wide Supply Voltage Range: 1.4V to 5.5V

    • Rail-to-Rail Input and Output Amplifier

    • Amplifier Gain-Bandwidth Product: 5kHz (TYP) at VS = 5V

    • Amplifier is Unity-Gain Stable

    • Comparator Propagation Delay: 6μs (TYP)

    • Comparator Push-Pull Output Current Drive: 19mA (TYP) at VS = 5V

    • -40 to +85℃ Operating Temperature Range

    • Available in a Green TQFN-4×4-16L Package


    Toll Booth Tags

    Wearable Products

    Temperature Measurements

    Battery Powered Systems

    Vibration Detectors

    Alarm and Monitoring Circuits

    Part NumberStatusPackagePinsPb-FreeTemp Range
    SGM8140YTQE16G/TRProductionTQFN-4×4-16L16Y-40℃ to +85℃