Product Details

The AD5412/AD5422 are low cost, precision, fully integrated 12-/16-bit digital-to-analog converters (DAC) offering a programmable current source and programmable voltage output designed to meet the requirements of industrial process control applications. 

The output current range is programmable at 4 mA to 20 mA, 0 mA to 20 mA, or an overrange function of 0 mA to 24 mA. 

The LFCSP version of this product has a CAP2 pin so that the HART signals can be coupled onto the current output of the AD5412/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 output ranges; an overrange of 10percent is available on all ranges. 

Analog outputs are short and open-circuit protected and can drive capacitive loads of 1 µF. 

The device operates with an AVDD power supply range from 10.8 V to 40 V. Current loop compliance voltage is 0 V to AVDD − 2.5 V. 

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 zeroscale/midscale voltage output or the low end of the selected current range. 

The total output error is typically ±0.01percent in current mode and ±0.01percent in voltage mode

Products Features

► 12-/16-bit resolution and monotonicity 

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

► ±0.01percent 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 

► 10percent overrange 

► ±0.01percent 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

Products Applications

► Process controls 

► Actuator controls 

► PLC

 ► HART network connectivity (LFCSP package only)

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