Integrated precision DACs for industrial automation systems

Analog Devices has introduced a new precision digital-to-analog converters (DACs) that significantly improve the reliability of industrial process control applications in harsh factory environments, including those operating under extreme temperatures or high compliance voltages. The offering includes four 12-bit to 16-bit single-channel DACs that integrate user-programmable current source and voltage output, making them suited for factory process control, distributed control, and smart transmitter systems. By eliminating the need for bulky discrete analog circuitry and mechanical pin-strapped configurations, the DACs reduce board space by as much as 70% compared to competing solutions, enabling system design engineers to deliver more cost- and space-efficient industrial equipment.

The products, which include the AD5422, AD5420, AD5412, and AD5410, leverage the technological advancements enabled by Analog Devices’ iCMOS industrial process technology, allowing them to achieve the high voltages needed by industrial applications. The AD5422 single-channel 16-bit DAC operates from a single 12 to 48V supply, or dual ±12 to ±24V supplies. The output configuration is software selectable from options of 5, 10, ±5 and ±10V in voltage mode and 4 to 20mA, 0 to 20mA, and 0 to 24mA in current mode. All output spans include an additional over-range setting.

The DACs incorporate a 30MHz serial peripheral interface (SPI), power-on reset and hardware CLR and CLR- select functionality for output control. Each device is fully specified over the industrial temperature range.


Analog Devices http://www.analog.com