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放大器的设计

Other Parts Discussed in Thread: OPA846

我想设计一个2-3倍的电压放大电路,输入信号为1Vpp,带宽0~100MHz。使用反相放大,考虑输入输出50欧姆阻抗匹配,我用的典型的运放电路设计,做出来的板子在200MHz左右有自激,反馈电阻并联电容也解决不了这个问题。我想知道电阻的取值怎样选取,反馈电阻上并联的电容大小怎样计算,有TI公司的员工推荐运放芯片吗?