Analog Devices Inc. AD74412R Quad-Channel Software Configurable I/O

Analog Devices AD74412R Quad-Channel Software Configurable Input/Output is a solution for building and process control applications and industrial automation. The AD74412R contains functionality for analog output, analog input, digital input, and resistance temperature detector (RTD) measurements integrated into a single chip solution with an interface compatible with the serial port interface (SPI). The device features a 16-bit analog-to-digital converter (ADC) and four configurable, 13-bit digital-to-analog converters (DACs) to provide four configurable I/O channels and a suite of diagnostic functions. The AD74412R has modes for voltage output, current output, voltage input, externally powered current input, loop powered current input, external RTD measurement, digital input logic, and loop-powered digital input. This device also contains a high-accuracy 2.5V internal reference to drive the DACs and the ADC.


  • Quad-channel software configurable input/output circuit
  • Screw terminals protected to ±40V
  • Line protectors to block power from the screw terminals to supplies
  • Six configurable modes
    • Voltage input
    • Current input
    • Voltage output
    • Current output
    • Digital input
    • RTD measurement
  • Internal 16-bit, Σ-∆ ADC with optional 50Hz and 60Hz rejection
  • 13-bit monotonic DACs
  • Charge pump for true zero voltage output
  • Internal temperature sensor, 5°C accuracy
  • On-chip diagnostics including open circuit and short-circuit detection
  • Robust architecture
  • SPI
  • 64-lead LFCSP
  • -40°C to +85°C operating temperature range


  • Building control systems
  • Process control
  • Industrial automation



Create Value with More Integration in Building Automation Controllers

Through integration and design reusability, Software-configurable I/O brings innovation to the building automation market. While being traditionally conservative, it is now being pushed to become more agile and respond to ever-changing customer needs more rapidly.

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Software Configurable Hardware Helps for Flexibility in Industrial I/O Modules

With the right Software configurable I/O ICs, manufacturers can develop a platform that replaces multiple aging fixed function I/O modules. Moreover, they can use this technology across multiple end applications where the I/O dynamically changes with each installation.

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Block Diagram

Block Diagram - Analog Devices Inc. AD74412R Quad-Channel Software Configurable I/O
Published: 2019-11-21 | Updated: 2023-09-12