I'm trying to design a current source / sink that will be a part of a step generator that will drive a BJT base. I only intend to drive small BJT transistors so a max base current of 10mA was decided upon (somewhat arbitrary).
The circuit can be re-configured by changing the polarity of the current source to sink. Using an op-amp with ultra-high input impedance / low input bias this circuit can go to nano amps and I intend to try and get close to that.
The op-amp of choice is TI (BB) OPA128 which has a typical current out rating of +/- 10mA. This seems about right, but I am a little worried that I will be stressing the device.
I have a couple of these devices, can I simply connect two of them in parallel or some other configuration so they will be able to drive a constant current of 10mA without too much "effort"?