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我做VCA821的AGC电路,用的是数据手册上的应用电路

Other Parts Discussed in Thread: OPA695, OPA820, VCA821

我用三个模块来做,vca821,OPA695,OPA820

我opa695输出两路1和2路 ,是都要加阻抗匹配电阻50欧姆吗,