ADR318:  Precision Low Drift SOT-23 Voltage Reference with Shutdown

The ADR318* is a precision 1.8 V band gap voltage reference featuring high accuracy, high stability, and low power consumption in a tiny footprint. Patented temperature drift curvature correction ...More

ADR318:  Precision Low Drift SOT-23 Voltage Reference with Shutdown

Product Description

The ADR318* is a precision 1.8 V band gap voltage reference featuring high accuracy, high stability, and low power consumption in a tiny footprint. Patented temperature drift curvature correction techniques minimize nonlinearity of the voltage change with temperature. The wide operating range and low power consumption with additional shutdown capability make the part ideal for battery-powered applications. The VOUT (SENSE) pin enables greater accuracy by supporting full Kelvin operation in PCBs employing thin or long traces.

The ADR318 is a low dropout voltage (LDV) device that provides a stable output voltage from supplies as low as 600 mV above the output voltage. This device is specified over the industrial operating range of 0°C to 70°C, and is available in a tiny 5-lead SOT-23 package.

The combination of VOUT (SENSE) and shutdown functions also enables a number of unique applications, combining precision reference/regulation with fault decision and overcurrent protection.

See the Applications section for details.

Applications

  • Battery-powered instrumentation
  • Portable medical instruments
  • Data acquisition systems
  • Industrial process control systems
  • Fault protection critical systems

    • * Protected by U.S. Patent No. 5,969,657; other patents pending.


    Features

    • Initial accuracy: ±5 mV maximum, ±0.27% maximum
    • Low temperature coefficient: 25 ppm/°C maximum
    • Load regulation: 100 ppm/mA
    • Line regulation: 25 ppm/V
    • Low supply headroom: 0.6 V
    • Wide operating range: (VOUT + 0.6 V) to 15 V
    • Low power: 120 µA maximum
    • Shutdown to less than 3 µA maximum
    • Output current: 5 mA
    • Wide temperature range: 0°C to 70°C
    • Tiny 5-lead SOT-23 package

    Diagrams

    ADR318 Diagram
    Pin Configuration Diagram for ADR318

    Specifications

    Vout 1.8
    Initial Accuracy (%) 0.27
    Ref Out TC (ppm/C) 5ppm/C
    Supply Voltage Range (V) +2.4 to +15
    Supply Current (max) 120µA
    Ref Output Current (mA) 5mA
    0.1-10 Hz Noise (µV p-p) 5µV p-p
    Temp Range(s) 0 to +70
    Package SOT23
    Reference Type Series-Low Dropout

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