Features and Benefits
- 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
- Temperature range: −40°C to +85°C
- 64-lead LFCSP
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 compatible 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.
- Quad-Channel, Software Configurable Channels.
- Built In Diagnostics and Alert Features.
- Robust Architecture. Surge tested to ±1 kV, per the IEC61000-4-5 standard, on the input/output terminals with unshielded cables.
- Building control systems
- Process control
- Industrial automation
Markets and Technologies
Product Lifecycle 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)
The EV-AD74412RSDZ (see Figure 1) is a fully featured evaluation board that can be used to evaluate the features of the AD74412R. The AD74412R is a quad-channel, software configurable, input/output device. The device has functionality for analog output, analog input, digital input, and resistance temperature detector (RTD) measurements integrated into a single-chip solution with a serial peripheral interface (SPI)- compatible interface.
The EV-AD74412RSDZ can be controlled via a system demonstration platform (SDP). The EVAL-SDP-CS1Z (SDP-S) board allows the EV-AD74412RSDZ to be controlled via the USB port of a PC using the AD74412R evaluation software.
The EVAL- AD74412RSDZ requires an AVDD operating supply of 14 V to 26.4 V. When the EV-AD74412RSDZ is connected to the PC, the PC provides power to the SDP-S board.
For full details on the AD74412R, see the AD74412R data sheet, which must be consulted in conjunction with this user guide when using the EV-AD74412RSDZ.
Documentation & Resources
Software Configurable Systems2/6/2020
Tools & Simulations
AD74412R Companion Parts
Recommended Power Management & Isolation
- For Isolated Power & Data: ADP1032.
- For Isolated Power: LT8301, LT3001.
- For Voltage Regulators: ADP124, ADP1720, ADP2360.
Recommended External Voltage Reference
- Ultra-Low-Noise, High-Accuracy 2.5V Voltage Reference: ADR4525.
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.
Sample & Buy
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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.