LTC1448

PRODUCTION

Dual 12-Bit Rail-to-Rail Micropower DAC

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Overview

  • 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

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.

Applications

  • Digital Calibration
  • Industrial Process Control
  • Automatic Test Equipment
  • Cellular Telephones
LTC1448
Dual 12-Bit Rail-to-Rail Micropower DAC
Functional Block Diagram: 12-Bit Rail-to-Rail Dual DAC Differential Nonlinearity vs Input Code Product Package 1
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Documentation

Data Sheet 1

Reliability Data 1

Application Note 1

Data Sheet

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Hardware Ecosystem

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