NJU9103 Series
Analog Front End with High Gain PGA

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  • Description

    NJU9103 is a small size AFE with up to 512 times internal PGA (Programmable Gain Amplifier). Internal 16-bit ΔΣ type A / D converter can perform conversion rates from 0.814ksps to 6.51ksps. The customer can choose internal A/D converter’s input, among single-ended input, differential input and pseudo-differential input.
    NJU9103 can set the optimum gain to the pressure sensor, flow sensor by a wide range of gain setting. Sensor of the offset is corrected by internal D / A converter. Various parameters (such as gain, conversion rate, correction) settings can be easily set in the SPI communication from an external MCU.
    NJU9103 will contribute to the customer's development time reduction and the series product release. NJU9103 is also can be mounted in a narrow application footprint by a small 8-pin package. Package is preparing the DFN and SSOP.


    • Pressure sensors
    • Flowmeters
    • Thermostat
    • PLC
    • Digital Panel Meters

  • Spec
    Supply Voltage 2.7V to 3.6V
    Operating Current Typ. 4mA
    Resolution 16
    Speed 0.814k to 6.51k
    Number of Pin 8
    Interface SPI
    Structure CMOS Technology
    Wide Operating Temperature -40℃ to +125℃
    Junction Temp. +150℃
    Package DFN8-V1(ESON8-V1),SSOP8
    ADC Resolution 16-Bit (No missing codes)
    Data Rate 0.814k to 6.51ksps(1)
    Input mode Differential/Single-ended (2)/Pseudo-differential (3)
    PGA 1V/V to 512V/V
    System Calibration for offset & gain drift
    Conversion mode Single / Continuous
    Note (1) Case of single conversion.(Continuous conversion is three times the data rate.)
    (2) PGA2 can be used only. (PGA1 cannot be used.) Two channels of VINP & VINN can be used.
    (3) Bias voltage of VINP & VINN is common to VDD / 2. Input Signal can be used VINP only.
  • 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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