GENERAL DESCRIPTION：

The AD5412/AD5422 are low cost, precision, fully integrated12-/16-bit digital-to-analog converters (DAC) offering a programmable current source and programmable voltage output designed tomeet the requirements of industrial process control applications.The output current range is programmable at 4 mA to 20 mA, 0 mAto 20 mA, or an overrange function of 0 mA to 24 mA.The LFCSP version of this product has a CAP2 pin so that theHART signals can be coupled onto the current output of theAD5412/AD5422.Voltage output is provided from a separate pin that can be configured to provide 0 V to 5 V, 0 V to 10 V, ±5 V, or ±10 V outputranges; an overrange of 10% is available on all ranges.Analog outputs are short and open-circuit protected and can drivecapacitive loads of 1 µF.The device operates with an AVDD power supply range from 10.8 Vto 40 V. Current loop compliance voltage is 0 V to AVDD − 2.5 V.The flexible serial interface is SPI- and MICROWIRE™-compatibleand can be operated in 3-wire mode to minimize the digital isolationrequired in isolated applications.The device also includes a power-on-reset function, ensuring thatthe device powers up in a known state. The part also includesan asynchronous clear pin (CLEAR) that sets the outputs to zeroscale/midscale voltage output or the low end of the selected currentrange.The total output error is typically ±0.01% in current mode and±0.01% in voltage mode.

FEATURES：

► 12-/16-bit resolution and monotonicity

► Current output ranges: 4 mA to 20 mA, 0 mA to 20 mA, or 0 mAto 24 mA

► ±0.01% FSR typical total unadjusted error (TUE)

► ±3 ppm FSR/°C output drift

► Voltage output ranges: 0 V to 5 V, 0 V to 10 V, ±5 V, or ±10 V

► 10% overrange

► ±0.01% FSR typical TUE

► ±2 ppm FSR/°C output drift

► Flexible serial digital interface

► On-chip output fault detection

► On-chip reference: 10 ppm/°C maximum

► Optional regulated DVCC output

► Asynchronous clear function

► Power supply range

► AVDD: 10.8 V to 40 V

► AVSS: −26.4 V to −3 V/0 V

► Current loop compliance voltage: AVDD – 2.5 V

► Temperature range: −40°C to +105°C

► TSSOP and LFCSP packages

APPLICATIONS：

► Process controls

► Actuator controls

► PLC

► HART network connectivity (LFCSP package only)