Single Channel, 12-/16-Bit, Serial Input, Current Source and Voltage Output DACs, HART Connectivity Data Sheet AD5412/AD5422 FEATURES GENERAL DESCRIPTION 12-/16-bit resolution and monotonicity The AD5412/AD5422 are low cost, precision, fully integrated Current output ranges: 4 mA to 20 mA, 0 mA to 20 mA, or 12-/16-bit digital-to-analog converters (DAC) offering a pro- 0 mA to 24 mA grammable current source and programmable voltage output 0.01% FSR typical total unadjusted error (TUE) designed to meet the requirements of industrial process control 3 ppm FSR/C output drift applications. Voltage output ranges: 0 V to 5 V, 0 V to 10 V, 5 V, or 10 V The output current range is programmable at 4 mA to 20 mA, 10% overrange 0 mA to 20 mA, or an overrange function of 0 mA to 24 mA. 0.01% FSR typical TUE The LFCSP version of this product has a CAP2 pin so that the 2 ppm FSR/C output drift HART signals can be coupled onto the current output of the Flexible serial digital interface AD5412/AD5422. On-chip output fault detection On-chip reference: 10 ppm/C maximum Voltage output is provided from a separate pin that can be Optional regulated DV output CC configured to provide 0 V to 5 V, 0 V to 10 V, 5 V, or 10 V Asynchronous clear function output ranges an overrange of 10% is available on all ranges. Power supply range Analog outputs are short and open-circuit protected and can AV : 10.8 V to 40 V DD drive capacitive loads of 1 F. AV : 26.4 V to 3 V/0 V SS The device operates with an AV power supply range from 10.8 V DD Current loop compliance voltage: AV 2.5 V DD to 40 V. Current loop compliance voltage is 0 V to AVDD 2.5 V. Temperature range: 40C to +105C TSSOP and LFCSP packages The flexible serial interface is SPI- and MICROWIRE-compatible and can be operated in 3-wire mode to minimize the digital APPLICATIONS isolation required in isolated applications. Process controls The device also includes a power-on-reset function, ensuring Actuator controls that the device powers up in a known state. The part also includes PLC an asynchronous clear pin (CLEAR) that sets the outputs to HART network connectivity (LFCSP package only) zero-scale/midscale voltage output or the low end of the selected current range. The total output error is typically 0.01% in current mode and 0.01% in voltage mode. Table 1. Pin-Compatible Devices Part No. Description AD5410 Single channel, 12-bit, serial input current source DAC AD5420 Single channel, 16-bit, serial input current source DAC COMPANION PRODUCTS HART Modem: AD5700, AD5700-1 Rev. O 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 20092017 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com AD5412/AD5422 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Fault Alert .................................................................................... 35 Applications ....................................................................................... 1 Voltage Output Short Circuit Protection ................................ 35 General Description ......................................................................... 1 Voltage Output Overrange ........................................................ 35 Companion Products ....................................................................... 1 Voltage Output Force-Sense ..................................................... 35 Revision History ............................................................................... 3 Asynchronous Clear (CLEAR) ................................................. 35 Functional Block Diagram .............................................................. 4 Internal Reference ...................................................................... 35 Specifications ..................................................................................... 5 External Current Setting Resistor ............................................ 35 AC Performance Characteristics .............................................. 10 Digital Power Supply .................................................................. 36 Timing Characteristics .............................................................. 10 External Boost Function............................................................ 36 Absolute Maximum Ratings .......................................................... 13 External Compensation Capacitor........................................... 36 ESD Caution ................................................................................ 13 HART Communication ............................................................. 36 Pin Configurations and Function Descriptions ......................... 14 Digital Slew Rate Control .......................................................... 36 Typical Performance Characteristics ........................................... 16 I Filtering Capacitors (LFCSP Package) ............................. 37 OUT General ......................................................................................... 16 Applications Information .............................................................. 39 Voltage Output ............................................................................ 18 Voltage and Current Output Ranges on the Same Terminal 39 Current Output ........................................................................... 23 Driving Inductive Loads ............................................................ 39 Terminology .................................................................................... 27 Transient Voltage Protection .................................................... 39 Theory of Operation ...................................................................... 29 Galvanically Isolated Interface ................................................. 39 Architecture ................................................................................. 29 Microprocessor Interfacing ....................................................... 39 Serial Interface ............................................................................ 30 Layout Guidelines....................................................................... 40 Power-On State ........................................................................... 31 Thermal and Supply Considerations ....................................... 40 Data Register ............................................................................... 33 Industrial Analog Output Module ........................................... 41 Control Register .......................................................................... 33 Industrial HART Capable Analog Output Application ........ 41 Reset Register .............................................................................. 34 Outline Dimensions ....................................................................... 43 Status Register ............................................................................. 34 Ordering Guide .......................................................................... 44 AD5412/AD5422 Features ............................................................ 35 Rev. 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