AD74412R

RECOMMENDED FOR NEW DESIGNS

Quad-Channel, Software Configurable Input/Output

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Overview

  • 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

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.

Product Highlights

  1. Quad-Channel, Software Configurable Channels.
  2. Built In Diagnostics and Alert Features.
  3. Robust Architecture. Surge tested to ±1 kV, per the IEC61000-4-5 standard, on the input/output terminals with unshielded cables.

 

Applications 

  • Building control systems
  • Process control
  • Industrial automation
     

AD74412R
Quad-Channel, Software Configurable Input/Output
AD74412R Functional Block Diagram AD74412R Pin Configuration
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Software Resources


Hardware Ecosystem

Parts Product Life Cycle Description
ADC/DAC Combo Converters 2
AD5700 PRODUCTION Low Power HART Modem
AD5700-1 PRODUCTION Low Power HART Modem with Precision Internal Oscillator
Interface Transceivers & Isolators 4
ADuM250N RECOMMENDED FOR NEW DESIGNS Robust 5.0 kVrms Five Channel Digital Isolator w/ Fail-Safe & 0 Reverse Channels
ADuM251N RECOMMENDED FOR NEW DESIGNS Robust 5.0 kVrms Five Channel Digital Isolator w/ Fail-Safe & 1 Reverse Channel
ADuM252N RECOMMENDED FOR NEW DESIGNS Robust 5.0 kVrms Five Channel Digital Isolator w/ Fail-Safe & 2 Reverse Channels
ADP1032 RECOMMENDED FOR NEW DESIGNS Two-Channel, Isolated Micropower Management Unit with Seven Digital Isolators
LDO Linear Regulators 2
ADP124 RECOMMENDED FOR NEW DESIGNS

5.5V Input, 500 mA, Low Quiescent Current, CMOS Linear Regulator with 31 Fixed-output Voltages

ADP1720 PRODUCTION 50 mA, High Voltage, Micropower Linear Regulator
Switching Regulators & Controllers 3
LT8301 RECOMMENDED FOR NEW DESIGNS 42VIN Micropower No-Opto Isolated Flyback Converter with 65V/1.2A Switch
LT3001 RECOMMENDED FOR NEW DESIGNS 36V 4W No-Opto Isolated Flyback Converter
ADP2360 RECOMMENDED FOR NEW DESIGNS 50 mA, 60 V, High Efficiency Buck Regulator
Voltage References 1
ADR4525 PRODUCTION Ultra-Low-Noise, High-Accuracy 2.5V Voltage Reference
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Tools & Simulations


Evaluation Kits

eval board
EVAL-AD74412R

AD74412R Evaluation Board

Features and Benefits

  • Fully featured evaluation board for the AD74412R
  • On-board 2.5 V ADR4525 reference
  • SPI
  • PC-based software for control

Product Details

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. 

EVAL-AD74412R
AD74412R Evaluation Board
AD74412R Evaluation Board AD74412R Evaluation Board - Top View AD74412R Evaluation Board - Bottom View

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