Features and Benefits

  • Integrated Precision Reference
    • 2.5V Full-Scale 10ppm/°C (LTC2635-L)
    • 4.096V Full-Scale 10ppm/°C (LTC2635-H)
  • Maximum INL Error: ±2.5 LSB (LTC2635-12)
  • Power-On-Reset to Zero-Scale/Mid-Scale/Hi-Z
  • Low Noise: 0.75mVP-P 0.1Hz to 200kHz
  • Guaranteed Monotonic Over –40°C to 125°C Automotive Temperature Range
  • Selectable Internal or External Reference
  • 2.7V to 5.5V Supply Range (LTC2635-L)
  • Ultralow Crosstalk Between DACs (3nV•s)
  • Low Power: 0.6mA at 3V
  • Double-Buffered Data Latches
  • Small 16-Pin 3mm × 3mm QFN and 10-Lead MSOP Packages

Product Details

The LTC2635 is a family of quad 12-, 10-, and 8-bit voltage-output DACs with an integrated, high-accuracy, low-drift reference in a 16-pin QFN or a 10-lead MSOP package. It has rail-to-rail output buffers and is guaranteed monotonic. The LTC2635-L has a full-scale output of 2.5V, and operates from a single 2.7V to 5.5V supply. The LTC2635-H has a full-scale output of 4.096V, and operates from a 4.5V to 5.5V supply. Each DAC can also operate with an external reference, which sets the fullscale output to the external reference voltage.

These DACs communicate via a 2-wire I2C-compatible serial interface. The LTC2635 operates in both the standard mode (clock rate of 100kHz) and the fast mode (clock rate of 400kHz). The LTC2635 incorporates a power-on reset circuit. Options are available for reset to zero-scale, reset to mid-scale in internal reference mode, reset to mid-scale in external reference mode, or reset with all DAC outputs in a high-impedance state after power-up.


  • Mobile Communications
  • Process Control and Industrial Automation
  • Power Supply Margining
  • Portable Equipment
  • Automotive

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.

Evaluation Kits (5)

Tools & Simulations


Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

Linduino code repository on GitHub and instructions on how to use the code.

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Product Recommendations

LTC2635 Companion Parts

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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.

PCN-PDN Information

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.