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Analog Devices reference circuit available for complete 4 mA to 20 mA Loop Powered Field Instrument with HART Interface
Analog Devices reference circuits are engineered and tested for quick and easy system integration to help solve today’s analog, mixed-signal, and RF design challenges.
In this article we will be looking at reference circuit number CN0267 which details a complete smart industrial, loop powered field instrument with 4 mA to 20 mA analog output and a highway addressable remote transducer (HART®) interface.
Based around the ADuCM360 ultra-low power precision Analog MCU, the AD5700 single chip low power HART modem and the AD5421 complete loop-powered, 4 mA to 20 mA digital-to-analog converter (DAC), this reference circuit addresses a number of key applications including Process control, Instrumentation, Factory automation and Sensors for Pressure, Temperature, Vibration, Strain gauge and Chemical sensing.
Each reference circuit from Analog Devices has a demo circuit board available to allow customers to fully test their design with real hardware helping to accelerate customers' design cycles.
For this reference circuit the DEMO-AD5700D2Z board is available, which includes additional features for easy system evaluation including a 0.1 inch-pitch connector footprint allowing optional primary and secondary sensor connections. There are also test points for HART RTS and CD signals which may be needed for HART compliance tests.
For more information, or details on the full range of Analog Devices products available from Anglia, please email info@anglia.com
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This news article was originally published in July 2013.
