AD74412R Datasheet | Analog Devices

FEATURES Quad-channel software configurable input/output circuit Screw terminals protected to ±40 V 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 50 Hz and 60 Hz 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 Temperature range: - 40°C to +85°C 64-lead LFCSP APPLICATIONS Building control systems Process control Industrial automation Quad-Channel, Software Configurable Input/Output GENERAL DESCRIPTION The AD74412R is a quad-channel software configurable input/output solution for building and process control applications. 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 patible with the serial port interface (SPI). The device features a 16-bit, Σ-∆ analog-to-digital converter (ADC) and four configurable, 13-bit digital-to-analog converters (DACs) to provide four configurable input/output channels and a suite of diagnostic functions. There are several modes related to the AD74412R. These modes are 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. The AD74412R contains a high accuracy 2.5 V internal reference to drive the DACs and the ADC. PANION PRODUCTS External Reference: ADR4525 Power: ADP1720 PRODUCT HIGHLIGHTS 1. Quad-Channel, Software Configurable Channels. 2. Built In Diagnostics and Alert Features . 3. Robust Architecture. Surge tested to ±1 k V, per the IEC61000-4-5 standard, on the input/output terminals with unshielded cables. Rev....