Features and Benefits

  • Current output ranges: 0 mA to 24 mA or 4 mA to 20 mA
    • ±0.03% FSR typical total unadjusted error (TUE)
    • ±5 ppm/°C typical output drift
    • 2% overrange
  • Flexible serial digital interface
  • On-chip output fault detection
  • PEC error checking
  • Asynchronous CLEAR function
  • Power supply range
    • AVDD: 12 V (± 10%) to 55 V (maximum)
  • Output loop compliance to AVDD − 2.75 V
  • Temperature range: −40°C to +105°C
  • 32-lead, 5 mm × 5 mm LFCSP package

Product Details

The AD5749 is a single channel, low cost, precision, current output driver with hardware or software programmable output ranges. The software ranges are configured via an SPI-/MICROWIRE- compatible serial interface. The AD5749 targets applications in PLC and industrial process control. The analog input to the AD5749 is provided from a low voltage, single-supply digital-to- analog converter (DAC) and is internally conditioned to provide the desired output current/voltage range.

The output current range is programmable across two current ranges: 0 mA to 24 mA, or 4 mA to 20 mA. Current output is open-circuit protected and can drive inductive loads of 0.1 H. The device is specified to operate with a power supply range from 10.8 V to 55 V. Output loop compliance is 0 V to AVDD − 2.75 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 interface also features an optional PEC error checking feature using CRC-8 error checking, useful in industrial environments where data communication corruption can occur.

The device also includes a power-on reset function ensuring that the device powers up in a known state and an asynchronous CLEAR pin that sets the outputs to the low end of the selected current range.

An HW SELECT pin is used to configure the part for hardware or software mode on power-up.

  • Process control
  • Actuator control
  • PLCs

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

Reference Designs (1)

Product Recommendations

AD5749 Companion Parts

Recommended Digital Isolators

  • For a 4-channel isolated interface in process control applications: ADUM1400.

Recommended External References

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

PCN-PDN Information

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.