AD5412AREZ-REEL7

12位,电流源和电压输出DAC

Product Details

The AD5412/AD5422 are low cost, precision, fully integrated 12-/16-bit digital-to-analog converters DAC offering a pro-grammable 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 10% 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 zero-scale/midscale voltage output or the low end of the selected current range.

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

**Applications**

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Process controls

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Actuator controls

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PLC

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HART network connectivity LFCSP package only

### Features and Benefits

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12-bit resolution and monotonicity

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

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±0.01% FSR typical total unadjusted error TUE

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±3 ppm FSR/°C output drift

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

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10% overrange

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±0.01% FSR typical TUE

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±2 ppm FSR/°C output drift

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Flexible serial digital interface

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On-chip output fault detection

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On-chip reference: 10 ppm/°C maximum

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Optional regulated DVCC output

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Asynchronous clear function

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Power supply range

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AVDD: 10.8 V to 40 V

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AVSS: −26.4 V to −3 V/0 V

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Current loop compliance voltage: AVDD – 2.5 V

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Temperature range: −40°C to +105°C

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TSSOP and LFCSP packages