The AD5422AREZ is a precision fully integrated 16-bit Digital-to-analog Converter (DAC) offering a programmable current source and programmable voltage output designed to meet the requirements of industrial process control applications. The LFCSP version of this product has a CAP2 pin so that the HART signals can be coupled onto the current output of the AD5422. Analog outputs are short and open-circuit protected and can drive capacitive loads of 1μF. The device operates with an AVDD power supply range from 10.8 to 40V. The flexible serial interface is SPI- and MICROWIRE?- compatible and can be operated in 3-wire mode to minimize the digital isolation required in isolated applications. The device also includes a power-on-reset function, ensuring that the device powers up in a known state. The part also includes an asynchronous clear pin (CLEAR) that sets the outputs to zero-scale/midscale voltage output or the low end of the selected current range.
