AD74115

RECOMMENDED FOR NEW DESIGNS

Single-Channel, Software Configurable Input and Output

Analog Devices AD74115 Product Info

10 February 2026 6

Features

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

Part details & applications

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.

APPLICATIONS

Isolated industrial control systems
Process control
Factory automation
Building control systems

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