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OPA4130: 输出信号有漂移

Part Number: OPA4130
Other Parts Discussed in Thread: OPA4130, INA828

使用OPA4130+INA828搭建的电路图如下:

发生的问题现象是在无输入信号的情况下,Vout的输出有漂移(逐渐向0V靠近),经过一段时间后稳定;

上电初期:Vout                                                                                       

  

经过几秒:Vout

 

通过改善电路的哪些参数能够消除现象,还拜托给与技术支持。