Quad-Channel, Software Configurable Input and Output Data Sheet AD74413R FEATURES GENERAL DESCRIPTION Quad-channel software configurable input/output circuit The AD74413R is a quad-channel software configurable Screw terminals tolerant to 40 V dc input/output solution for building and process control Line protectors to block power from the screw terminals to applications. The AD74413R contains functionality for analog supplies output, analog input, digital input, resistance temperature User configurable modes detector (RTD), and thermocouple measurements integrated Voltage input into a single chip solution with a serial peripheral interface (SPI). Current input The device features a 16-bit, - analog-to-digital converter Voltage output (ADC) and four configurable, 13-bit digital-to-analog converters Current output (DACs) to provide four configurable input/output channels and a Digital input suite of diagnostic functions. RTD measurement There are several modes related to the AD74413R. These modes Internal 16-bit, - ADC with optional 50 Hz and 60 Hz are voltage output, current output, voltage input, externally rejection powered current input, loop powered current input, external RTD 13-bit monotonic DACs measurement, digital input logic, and loop powered digital input. Charge pump for true zero voltage output HART-compatible The AD74413R contains a high accuracy 2.5 V internal Internal temperature sensor, 5C accuracy reference to drive the DACs and the ADC. On-chip diagnostics including open circuit and short-circuit COMPANION PRODUCTS detection External Reference: ADR4525 SPI-compatible Temperature range: 40C to +105C PRODUCT HIGHLIGHTS 64-lead LFCSP 1. Quad-Channel, Software Configurable Channels. APPLICATIONS 2. Built In Diagnostics and Alert Features. 3. Robust Architecture. Process control Factory automation Motor drives Building control systems Rev. 0 Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 2019 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. AD74413R Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Digital Input, Loop Powered Mode ......................................... 42 Applications ....................................................................................... 1 Getting Started ............................................................................ 43 General Description ......................................................................... 1 Using Channel Functions .......................................................... 43 Companion Products ....................................................................... 1 ADC Functionality ..................................................................... 44 Product Highlights ........................................................................... 1 Diagnostics .................................................................................. 48 Revision History ............................................................................... 3 DACs ............................................................................................ 49 Functional Block Diagram .............................................................. 4 Driving Inductive Loads ............................................................ 50 Specif icat ions ..................................................................................... 5 Reset Function ............................................................................ 50 Voltage Output .............................................................................. 5 Thermal Alert and Thermal Reset ........................................... 50 Current Output ............................................................................. 6 Faults and Alerts ......................................................................... 50 Voltage Input ................................................................................. 7 Power Supply Monitors ............................................................. 50 Current Input Externally Powered and Current Input GPO x Pins ................................................................................. 51 Externally Powered with HART ................................................. 8 SPI Interface and Diagnostics ................................................... 51 Current Input Loop Powered ...................................................... 9 Board Design and Layout Considerations .................................. 54 Resistance Measurement ............................................................. 9 Applications Information .............................................................. 55 Digital Input Logic ..................................................................... 10 Register Map ................................................................................... 56 Digital Input Loop Powered ...................................................... 11 NOP Register .............................................................................. 57 ADC Specifications .................................................................... 11 Function Setup Register per Channel ...................................... 57 General Specifications ............................................................... 13 ADC Configuration Register per Channel ............................. 57 Timing Characteristics .............................................................. 15 Digital Input Configuration Register per Channel ................ 58 Absolute Maximum Ratings .......................................................... 17 GPO Parallel Data Register ....................................................... 59 Thermal Resistance .................................................................... 17 GPO Configuration Register per Channel ............................. 59 ESD Caution ................................................................................ 17 Output Configuration Register per Channel .......................... 60 Pin Configuration and Function Descriptions ........................... 18 DAC Code Register per Channel ............................................. 60 Typical Performance Characteristics ........................................... 21 DAC Clear Code Register per Channel ................................... 60 Voltage Output ............................................................................ 21 DAC Active Code Register per Channel ................................. 61 Current Output ........................................................................... 23 Digital Input Threshold Register.............................................. 61 Digital Input ................................................................................ 25 ADC Conversion Control Register .......................................... 61 Resistance Measurement ........................................................... 26 Diagnostics Select Register ....................................................... 62 Reference ..................................................................................... 27 Digital Output Level Register ................................................... 63 ADC ............................................................................................. 28 ADC Conversion Results Register per Channel .................... 64 Supplies ........................................................................................ 29 Diagnostic Results Registers per Diagnostic Channel .......... 64 Theory of Operation ...................................................................... 30 Alert Status Register ................................................................... 64 Robust Architecture ................................................................... 30 Live Status Register .................................................................... 66 Serial Interface ............................................................................ 30 Alert Mask Register .................................................................... 67 DAC Architecture ....................................................................... 30 Debounced DIN Count Register per Channel ....................... 67 ADC Overview ........................................................................... 31 Readback Select Register ........................................................... 68 Reference ..................................................................................... 31 Thermal Reset Enable Register ................................................. 68 Power-On State of the AD74413R............................................ 31 Command Register .................................................................... 68 Device Functions ........................................................................ 31 Scratch or Spare Register ........................................................... 69 Rev. 0 Page 2 of 70