12-Bit Rail-to-Rail Micropower DACs in SO-8

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.

Applications

* Digital Calibration

* Industrial Process Control

* Automatic Test Equipment

* Cellular Telephones

* 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