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是用OPA2277还是OPA2241?

Other Parts Discussed in Thread: OPA2241, OPA2277

做了一个恒流源,需用运放,OPA2277是高精度运放,但是双电源供电,可以使用吗?OPA2241精度比OPA2277差,但可单电源供电,哪个好一点?