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关于VCA821的输出失调电压问题

Other Parts Discussed in Thread: VCA821, OPA695

请问TI专家,关于VCA821这款芯片,在Vg端控制电压从0V至2v变化过程中,其输出失调电压(后级接opa695,为了观察vca821的输出失调电压,故用opa695放大)表现出下列现象,请问是否正常:

电路配置:

 

下图的Vo输出失调电压是从opa695Vo端测出的