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高精度的1mA电流源激励

Other Parts Discussed in Thread: LM134

我现在需要设计一个高温、高精度的1mA电流源激励,TI的LM134这款产品,说明书上写的初始精度3%,这个我不太理解,希望能帮忙解答一下。而且因为我后续测量精度要求是0.5%,所以这个3%的精度是不是不达要求啊?