NJU9101 Series
Low Power Analog Front End

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  • Description

    The NJU9101 is a Low Power Analog Front End IC for use in micro-power sensing applications, especially electrochemical sensors. It provides a complete signal processing solution between sensor and micro-processor as smart-sensor module. NJU9101 has 2 channel low power operational amplifiers. These amplifiers provide potentiostat and trans-impedance-amplifiers to constitute gas sensor systems. The NJU9101 has calibration circuit by using output data of built-in high precision ADC. It is suitable for temperature variation of sensor. NJU9101 operates over voltage range of 2.4V to 3.6V. Total average current consumption can be less than 5µA.


    • Gas Monitor
    • Blood Glucose Meter
    • Current Sensing Systems
    • Low Power Systems
    • Photodiode Sensing Systems
    • Portable equipment

  • Spec
    Supply Voltage 2.4V to 3.6V
    Operating Current (Op-Amp) Typ.4uA
    (ADC) Typ. 150uA
    Resolution 16
    Speed 32 to 2k
    Number of Pin 24
    Interface I2C
    Structure CMOS Technology
    Wide Operating Temperature -40℃ to +85℃
    Junction Temp. +150℃
    Package EQFN24-LE
    Low Noise Amplifier 1.3µVpp typ. (0.1 to 10Hz)
    Low Offset Voltage Amplifier 300µV max.
    Programmable Cell Bias Voltage OPA: 0.3V to 1.7V (7 steps)
    OPB: 0.25V to 1.75V (50mV step)
    Programmable Gain Pre-Amplifier 1V/V to 8V/V
    High resolution Programmable Gain ADC 1V/V to 8V/V, 16-Bit (NFB), 32sps to 2k sps
    Note RF immunity Amplifier
    System Calibration for offset & gain drift
    Control external EEPROM as a Master device
  • 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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