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opa2889运放正向削波

Other Parts Discussed in Thread: OPA2889

opa2889运放正向削波,看了ti的文献,你是否超越了运放的输入共模区间www.ti.com.cn/.../gencontent.tsp。①处输入1v正弦波,②处与①处的波形重合,3处就出现了正向削波,④的削波更加厉害。看手册,共模输入范围是±3.9v,5脚输入的1v的直流,共模是2v没有范围,请问,这个是问题,有什么解决方案。