LTC1659

FEATURES ■ Buffered True Rail-to-Rail Voltage Output ■ Maximum DNL Error: 0.5LSB ■ 12-Bit Resolution ■ Supply Operation: 3V to 5V ■ Output Swings from 0V to VREF ■ VREF Can Tie to VCC ■ Schmitt Trigger On Clock Input Allows Direct Optocoupler Interface ■ Power-On Reset Clears DAC to 0V ■ 3-Wire Cascadable Serial Interface ■ Low Cost ■ 8-Lead SO and MSOP Packages APPLICATIONS ■ Digital Calibration ■ Industrial Process Control ■ Automatic Test Equipment ■ Cellular Telephones LTC1659 12-Bit Rail-to-Rail Micropower DAC in MSOP Package DESCRIPTION The LTC®1659 is a single supply, rail-to-rail voltage output, 12-bit digital-to-analog converter (DAC) in an MSOP package. It includes a rail-to-rail output buffer amplifier and an easy-to-use 3-wire cascadable serial interface. The LTC1659 output swings from 0V to REF. The REF input can be tied to VCC which can range from 2.7V to 5.5V. This allows a rail-to-rail output swing from 0V to VCC. The LTC1659 draws only 250μA from a 5V supply. Its guaranteed ±0.5LSB maximum DNL makes the LTC1659 excel in calibration, control and trim/adjust applications. The low power supply current and the small MSOP package make the LTC1659 ideal for battery-powered applications. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION μP TO OTHER DACS Functional Block Diagram: 12-Bit Rail-to-Rail DAC 2.7V TO 5.5V 2 DIN 8 VCC 1 CLK 3 CS/LD 4 DOUT ...