Features and Benefits

  • Integrated Precision Reference
    • 2.5V Full-Scale 10ppm/°C (LTC2631-L)
    • 4.096V Full-Scale 10ppm/°C (LTC2631-H)
  • Maximum INL Error: 1LSB (LTC2631A-12)
  • Bidirectional Reference: Input or 10ppm/°C Output
  • 400kHz I2C Interface
  • Nine Selectable Addresses (LTC2631-Z)
  • Low Noise (0.7mVP-P , 0.1Hz to 200kHz)
  • Guaranteed Monotonic Over Temperature
  • 2.7V to 5.5V Supply Range (LTC2631-L)
  • Low Power Operation: 180μA at 3V
  • Power Down to 1.8μA Maximum (C and I Grades)
  • Power-On Reset to Zero or Mid-Scale Options
  • Double-Buffered Data Latches
  • Guaranteed Operation From –40°C to 125°C (H-Grade)
  • 8-Lead TSOT-23 (ThinSOT) Package

Product Details

The LTC2631 is a family of 12-, 10-, and 8-bit voltage-output DACs with an integrated, high accuracy, low-drift reference in an 8-lead TSOT-23 package. It has a rail-to-rail output buffer that is guaranteed monotonic.

The LTC2631-L has a full-scale output of 2.5V, and operates from a single 2.7V to 5.5V supply. The LTC2631-H has a full-scale output of 4.096V, and operates from a 4.5V to 5.5V supply. A 10ppm/°C reference output is available at the REF pin.

Each DAC can also operate in External Reference mode, in which a voltage supplied to the REF pin sets the fullscale output.

The LTC2631 DACs use a 2-wire, I2C-compatible serial interface. The LTC2631 operates in both the standard mode (clock rate of 100kHz) and the fast mode (clock rate of 400kHz).

The LTC2631 incorporates a power-on reset circuit. Options are available for reset to zero-scale or reset to mid-scale after power-up.


  • Mobile Communications
  • Process Control and Industrial Automation
  • Automatic Test Equipment
  • Portable Equipment
  • Automotive
  • Optical Networking

Evaluation Kits (4)

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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.