DESCRIPTION
The LTC®1446/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.

FEATURES
■ 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

APPLICATIONS
■ Digital Calibration
■ Industrial Process Control
■ Automatic Test Equipment
■ Cellular Telephones