Features and Benefits

  • SO-8 Package
  • 12-Bit Resolution
  • Buffered True Rail-to-Rail Voltage Output
  • External Reference Input Can Be Tied to VCC
  • Output Swings from 0V to VREF
  • 3V and 5V Supply Operation
  • Schmitt Trigger on Clock Input Allows Direct Optocoupler Interface
  • Power-On Reset Clears DACs to 0V
  • 3-Wire Serial Interface
  • Maximum DNL Error: 0.5LSB
  • Low Cost

Product Details

The LTC1448 is a dual rail-to-rail voltage output, 12-bit digital-to-analog converter (DAC). It includes rail-to-rail output buffer amplifiers and an easy-to-use 3-wire serial interface. It is available in 8-pin SO and PDIP packages and provides the smallest footprint of any dual 12-bit DAC.

The LTC1448 has an external reference input pin (REF) and its outputs swing from 0V to REF. The REF input can be tied to VCC providing rail-to-rail operation from supplies of 2.7V to 5.5V. (For devices with internal reference see the LTC1446 data sheet.) The LTC1448 dissipates 2.5mW from a 5V supply.

The low power supply current and the small SO-8 package make the LTC1448 ideal for battery-powered applications.


  • Digital Calibration
  • Industrial Process Control
  • Automatic Test Equipment
  • Cellular Telephones

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.

Product Recommendations

LTC1448 Companion Parts

Recommended µModule Isolator

Recommended D/A Converters

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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