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The ZR4040-4.1 uses a bandgap circuit design to achieve a precision micropower voltage reference of 4.1 volts. The device is available in a small outline surface mount package, ideal for applications where space saving is important, as well as packages for through hole requirements. The ZR4040-4.1 design provides a stable voltage without an external capacitor and is stable with capacitive loads. The ZR4040-4.1 is recommended for operation between 60µA and 15mA and so is ideally suited to low power and battery powered applications. Excellent performance is maintained to an absolute maximum of 25mA, however the rugged design and 20 volt processing allows the reference to withstand transient effects and currents up to 200mA. Superior switching capability allows the device to reach stable operating conditions in only a few microseconds.


  • Battery powered and portable equipment.
  • Metering and measurement systems.
  • Instrumentation.
  • Test equipment.
  • Data acquisition systems.
  • Precision power supplies.
  • Crystal oscillators.


  • Small outline SOT23 package
  • No stabilising capacitor required
  • Typical TC 20ppm/°C
  • Typical slope resistance 0.55Ω
  • 2% and 1% tolerance
  • Industrial temperature range
  • Operating current 60μA to 15mA
  • Product Specifications

    Product Parameters

    Compliance (Only Automotive supports PPAP) Standard
    Qualified to AEC-Q10x No
    ReferenceVoltage (V) 4.096 V
    Accuracy (%) 1 %
    MaximumInput Voltage (V) - V
    Sink Current (mA) 20 mA
    Minimum Cathode Current for Regulation Typ (µA) 50 µA
    Typical Temperature Coefficient (ppm/°C) 20 ppm/°C
    Maximum Slope Resistance (Ω) 2 Ω
    Noise Voltage (µV/Hz) 90 µV/Hz
    Operating Ambient Temperature Range (°C) -40 to 85 °C

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