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想搭建一个压控电流源的电路，驱动LED电流200-600mA，但是频响不够达不到300MHz，请问TI的大牛工程师该如何改进，从哪里改进电路？
LED需要300M带宽响应？LED响应才20nS，却要3.3nS响应速度？这是为啥？
从电路参数看；亲还不具有高频电路设计能力。
