Digitally_controlled_4__to_20_mA_current_loop_generator

Published:2009/7/23 22:14:00 Author:Jessie | From:SeekIC

This 5-V circuit uses a servo-controlled dc/dc converter to generate the compliance voltage necessary for loop-current requirements in industrial-control (valves, etc.) applications. The circuit will drive 4 to 20 mA into loads as high as 2200 Ω (44 V compliance) and is inherently short-circuit protected. The digital input permits easy interface to digital systems.



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