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.APPLICATIONSIsolated industrial control systemsProcess controlFactory automationBuilding control systems