Features and Benefits

  • Low Quiescent Current 5.6µA (typical)
  • Wide Supply Range: 1.4V to 18V
  • 400mV Reference ±1% Maximum Accuracy Over Temperature at 5V
  • Rail-to-Rail Buffer Amplifier
  • 0.5% 400mV Maximum Initial Accuracy at 5V
  • Shunt Configurable
  • Sinks and Sources Current
  • Wide Operational Range –40°C to 125°C
  • Externally Adjustable Output Voltage
  • Low Profile 1mm 5-lead SOT-23 (ThinSOT) Package

Product Details

The LT6650 is a micropower, low voltage 400mV reference. Operating with supplies from 1.4V up to 18V, the device draws only 5.6µA typical, making it ideal for low voltage systems as well as handheld instruments and industrial control systems. With only two resistors the internal buffer amplifier can scale the 400mV reference to any desired value up to the supply voltage.

The reference is post package-trimmed to increase the output accuracy. The output can sink and source 200µA over temperature. Quiescent power dissipation is 28µW. Stability is ensured with any output capacitor of 1µF or higher.

The LT6650 is the lowest voltage series reference available in the 5-lead SOT-23 package.


  • Battery-Operated Systems
  • Handheld Instruments
  • Industrial Control Systems
  • Data Acquisition Systems
  • Negative Voltage References

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Tools & Simulations


LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.


Models for the following parts are available in LTspice:


Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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