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.