The AD5421 is a complete, loop-powered, 4 mA to 20 mA digital-to-analog converter (DAC) designed to meet the needs of smart transmitter manufacturers in the industrial control industry. The DAC provides a high precision, fully integrated, low cost solution in a compact TSSOP package and LFCSP packages.
The AD5421 includes a regulated voltage output that is used to power itself and other devices in the transmitter. This regulator provides a regulated 1.8 V to 12 V output voltage. The AD5421 also contains 1.22 V and 2.5 V references, thus eliminating the need for a discrete regulator and voltage reference.
The AD5421 can be used with standard HART® FSK protocol communication circuitry without any degradation in specified performance. The high speed serial interface is capable of opera-ting at 30 MHz and allows for simple connection to commonly used microprocessors and microcontrollers via a SPI-compatible, 3-wire interface.
The AD5421 is guaranteed monotonic to 16 bits. It provides 0.0015% integral nonlinearity, 0.0012% offset error, and 0.0006% gain error under typical conditions.
The AD5421 is available in a 28-lead TSSOP and a 32-lead LFCSP specified over the extended industrial temperature range of −40°C to +105°C.
|Title||Content Type||File Type|
|AD5421: 16-Bit, Serial Input, Loop-Powered, 4 mA to 20 mA DAC Data Sheet (Rev H, 11/2014) (pdf, 3039 kB)||Data Sheets|
|CN0278: Complete 4 mA to 20 mA HART Solution with Additional Voltage Output Capability (pdf, 442 kB)||Circuit Note|
|Complete 4 mA to 20 mA Loop Powered Field Instrument with HART Interface (pdf, 259 kB)||Circuit Note|
AD5421: 16-bit 4mA to 20mA DAC
The AD5421 is a loop powered 16-bit 4mA to 20mA digital to analog converter (DAC) and features integrated precision converters and smart power management circuitry. The AD5421 is the industry's lowest power 4mA to 20mA DAC.
|UG-250: Evaluation Board for 16-Bit, Serial Input, Loop-Powered 4 mA to 20 mA DAC (pdf, 540 kB)||User Guides|
|MS-2528: Power Consumption: a Primary Consideration in Smart Transmitter Design (pdf, 516 kB)||Technical Articles|
|Signal Chain Solution for 4-mA to 20-mA HART Enabled Field Instrument Applications (26 Mar 2013)||Press Releases||HTML|
|Digital to Analog Converters ICs Solutions Bulletin (pdf)||Solutions Bulletins|
Industrial ICs Solutions Bulletin, Volume 10, Issue 8
|RAQs index||Rarely Asked Questions||HTML|
|Glossary of EE Terms||Glossary||HTML|
|Title||Content Type||File Type|
|AD5421 IBIS Model||IBIS Models||HTML|
|AD5421 - Microcontroller No-OS Driver||Device Drivers||HTML|
|AD5421 IIO DAC Linux Driver||Device Drivers||HTML|
|AD5421 FMC-SDP Interposer & Evaluation Board / Xilinx KC705 Reference Design||FPGA HDL||HTML|
|BeMicro FPGA Project for AD5421 with Nios driver||FPGA HDL||HTML|
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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.