I need a circuit or component which converts bipolar voltage to bipolar current. I have found the XTR111 from Texas Instruments and the 1B22 from Analog Devices. However, they only convert 0-10 V to 0-20 mA current.
I to need convert -10V-0V to -10mA-0mA too (the opposite polarity range). How can I do that? Or can I add a circuit to work with 1B22 or XTR111?