用OPA277对峰值1V的正弦交流电压信号做偏置,将电压抬升1.65V,仿真结果有问题,见附件。请问是电路的问题还是仿真软件的问题,请指出,谢谢
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下面是楼主电路的传递函数:
Vout = Vg2 * (R1/(R1+R2)) + Vref * (R2/(R1+R2))
所以输出是353.5mV
1)同向加法电路,需要通过电阻来实现加法。关于原理不再赘述,楼主请参考《电路基础》;
2)实现方法有非常多种,需要根据具体应用要求而定,无法一一列举;
3)更多应用,楼主可以参考本版的置顶帖,单电源应用讨论帖。
建议楼主提问前,参考以下帖子:
http://www.deyisupport.com/question_answer/f/55/t/487.aspx