Alternative Parts


Features and Benefits

  • Single-channel software configurable input and output
  • Multiple configurable modes to a single pin
    • Voltage input
    • Current input
    • Voltage output
    • Current output
    • Digital input
    • Digital output
    • 2-wire, 3-wire, or 4-wire RTD measurements
    • Thermocouple measurement
  • Overvoltage tolerant on screw terminal facing pins, powered or unpowered
  • Auxiliary high voltage sense pins
  • 10 ppm/°C reference temperature coefficient
  • 16-bit, Σ-Δ ADC with optional 50 Hz and 60 Hz rejection
  • 14-bit monotonic DAC
  • Unipolar and bipolar capability
  • On-chip diagnostics including open-circuit and short-circuit detection
  • Internal temperature sensor, ±5°C accuracy
  • SPI-compatible
  • Wide power supply range
  • Programmable power control
  • Temperature range: −40°C to +105°C
  • 48-lead LFCSP

Product Details

The AD74115 is a single-channel, software-configurable, input and output device for industrial control applications. The AD74115 provides a wide range of use cases, integrated on a single chip. These use cases include analog output, analog input, digital output, digital input, resistance temperature detector (RTD), and thermocouple measurement capability. A serial peripheral interface (SPI) is used to handle all communications to the device. The digital input and digital outputs can be accessed via the SPI or the general-purpose input and output (GPIO) pins to support higher speed data rates.

The device features a 16-bit, Σ-Δ analog-to-digital converter (ADC) and a 14-bit digital-to-analog converter (DAC). The AD74115 contains a high accuracy 2.5 V on-chip reference that can be used as the DAC and ADC reference.

Power and isolation can be provided using the ADP1034 companion product. When using the ADP1034 and AD74115 together, programmable power control (PPC) is available on the positive analog supply, AVDD, which allows for an optimized power solution in the end application. An on-chip charge pump can be enabled if unipolar capability is required.


  • Isolated industrial control systems
  • Process control
  • Factory automation
  • Building control systems

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)

Tools & Simulations

IBIS Models

Product Recommendations

AD74115 Companion Parts

Recommended Power and Data Isolation with PPC

Recommended Voltage Reference

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.

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(*)The 1Ku 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. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through To order more than two, please purchase through one of our listed distributors.

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.