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

The LTC1446/LTC1446L are dual 12-bit digital-to-analog converters (DACs) available in an SO-8 package. They are complete with a rail-to-rail voltage output amplifier, an internal reference and an easy-to-use 3-wire cascadable serial interface.

The LTC1446 has an internal reference and a full-scale output of 4.095V. It operates from a single 4.5V to 5.5V supply.

The LTC1446L has an internal reference and a full-scale output of 2.5V. It operates from a single 2.7V to 5.5V supply.

The low power supply current makes the LTC1446 family ideal for battery-powered applications. These DACs are available in space saving 8-pin SO and PDIP packages and require no external components for operation.

Applications

* Digital Calibration

* Industrial Process Control

* Automatic Test Equipment

* Cellular Telephones

* Dual DACs with 12-Bit Resolution

* SO-8 Package

* Rail-to-Rail Output Amplifiers

* Internal Reference

* Maximum DNL Error: 0.5LSB

* 3V Operation (LTC1446L): ICC = 650µA Typ

* 5V Operation (LTC1446): ICC = 1000µA Typ

* Settling Time: 14µs to ±0.5LSB

* Power-on Reset Clears DACs to 0V

* 3-Wire Cascadable Serial Interface with 500kHz Update Rate

* Schmitt Trigger On Input Allows Direct Optocoupler Interface

* Low Cost