Features

• 12-Bit Resolution
• Buffered True Rail-to-Rail Voltage Output
• 3V Operation (LTC1453), Icc: 250µA Typ
• 5V Operation (LTC1451), Icc: 400µA Typ
• 3V to 5V Operation (LTC1452), Icc: 225µA Typ
• Built-In Reference: 2.048V (LTC1451)
  1.220V (LTC1453)
• Multiplying Version (LTC1452)
• Power-On Reset
• SO-8 Package
• 3 wire Cascadable Serial Interface
• Maximum DNL Error: 0.5LSB
• Schmitt Trigger on Clock Input Allows Direct
  Optocoupler Interface

Typical Application

Description

The LTC1451/LTC1452/LTC1453 are complete single supply, rail-to-rail voltage output 12-bit digital-to-analog converters (DACs) in an SO-8 package. They include an output buffer amplifier and an easy-to-use 3-wire cascadable serial interface.The LTC1451 has an onboard reference of 2.048V and a full-scale output of 4.095V. It operates from a single 4.5V to 5.5V supply.The LTC1452 is a multiplying DAC with a full-scale output of twice the reference input voltage. It operates from a single supply of 2.7V to 5.5V.The LTC1453 has an onboard 1.22V reference and a full-scale output of 2.5V. It operates from a single supply of 2.7V to 5.5V.The low power supply current makes the LTC1451 family ideal for battery-powered applications. The space saving 8-pin SO package and operation with no external components provide the smallest 12-bit DAC system available.