LTC1456

LTC1456 12-Bit Rail-to-Rail Micropower DAC with Clear Input FEATURES s s s s s s DESCRIPTION The LTC®1456 is a complete single supply, rail-to-rail voltage output, 12-bit digital-to-analog converter (DAC) in an SO-8 package. It includes a rail-to-rail output buffer amplifier and an easy-to-use 3-wire cascadable serial interface. The LTC1456 includes a CLR pin that asynchronously clears the DAC to zero scale. The LTC1456 has an internal 2.048V reference and a fullscale output of 4.095V. It operates on a 4.5V to 5.5V supply, dissipating 2.2mW. The low power supply current and the space saving SO-8 package make the LTC1456 ideal for battery-powered applications. , LTC and LT are registered trademarks of Linear Technology Corporation. s s s s SO-8 Package 12-Bit Resolution Buffered True Rail-to-Rail Voltage Output Asynchronous Clear Input Built-In Reference Schmitt Trigger On Clock Input Allows Direct Optocoupler Interface Power-On Reset Clears DAC to 0V 3-Wire Cascadable Serial Interface Maximum DNL Error: 0.5LSB Low Cost U APPLICATIONS s s s s Digital Calibration Industrial Process Control Automatic Test Equipment Cellular Telephones TYPICAL APPLICATION Functional Block Diagram: 12-Bit Rail-to-Rail DAC with Clear Input 8 2 DIN 1 CLK µP 3 CS/LD 12-BIT SHIFT REG AND DAC LATCH VCC 4.5V TO 5.5V 2.048V 0.5 + 12-BIT DAC – DNL ERROR (LSB) VOUT 7 RAIL-TO-RAIL VOLTAGE OUTPUT 4 DOUT TO OTHER DACS 6 CLR POWER-ON RESET GND 5 1456 TA01 U U Differential Nonlinearity vs Input ...