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Precision Current source

Question asked by Hemnath on Mar 13, 2017
Latest reply on Jul 5, 2017 by JinoL

Hey Hi, I am designing a lab grade precision 0 to 25 mA current source with 1 uA resolution and 0.01% accuracy. Overview: Interfaced a 16 bit DAC (AD5060BRJZ) to a controller. Can you specify any precision opamp for a current source? Also can you suggest, which one will be better, Howland current source or unipolar current source with transistor feedback?

 

Any reference circuit would be much appreciated.

 

Thanks in advance.

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