I want to extend the compliance voltage of the iDAC to 20V using a current mirror such that I can apply 0~100uA DC current over a wide range of loads.
The above thread suggests a Wilson current mirror.
How would the iDAC and load be connected with respect to the schematic above. And which BJTs are recommended (small footprint desired over accuracy)? Would the BCV61 or BCV62 transistors work?