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Constant current source using current feedback op amp

Hi everyone

I have a weird design challenge. I have to make high bandwidth constant current AC source. Usual constant current sources include voltage feedback op amps that are strait forward in regards to their design, but since the bandwidth has to be so large (1Mhz) i need to use an op amp with current feedback. I have been struggling to figure out the solution to this problem since the output current depends on output load (which is not good) in every circuit i came up with.

If you have solution to this problem in forms of schematics, or if you can offer any help i would be very grateful

Best regards