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Not correct output amperage of EVAL-AD5421SDZ

Question asked by DanilaIce on Jul 23, 2014
Latest reply on Jul 30, 2014 by DanilaIce

Hello every body! I have some problems with output amperage using EVAL-AD5421SDZ or AD5421 device. I think you may understand my problem by looking some pictures I added to the conversation.

Any way, the problem is thet ad5421 is a very precision loop povered DAC and multimetr must show 20 mA amperage, but it shows 19.2 mA. Thank you.

 

R12 = 252 Ohm (Resistive load)

Loop input voltage = +24V

Loop input amperage = 100 mA (Also no result with 200 mA)

Multimetr resistence = 10 Ohm

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