可以将正弦波输入到PSoC内部的低通滤波器的模拟输入端吗？

是的，你可以把正弦波发送到PSoC3，它的输入完全能够处理AcPosits（取决于电压水平高达几MHz）。但是你不能用你的信号在地面或VDDA以上，但是你的建议信号即使是3.3V的VDDA也会很好。
我认为没有内部积分器，但是你应该能够用惰性运算放大器和一些外部电容器/电阻器自己构建一个。或者你去实验和数字化的信号，并把它输入到数字滤波器…



     以下为原文
  Yes, you can send in a sine wave to the PSoC3 - its inputs are perfectly capable to handle AC inputs (up to several MHz, depending on the voltage levels). But you cannot go below ground or above Vdda with your signal - but your proposed signal would be fine even with 3.3V Vdda.
    I think there is no internal integrator, but you should be able to build one by yourself using the inernal OpAmps and some external capacitors / resistors. Or you go experimental and digitize the signal and feed it into the digital filter...

始终检查数据表以查看是否在使用R—R输入
和输出，否则有限的CM范围将限制PK-PK摆动。
为了将信号偏移到PSoC，可以将AC耦合到一个简单的分频器。
将偏移量提供给输入。或者您可以使用以下消除
耦合帽，只使用两个R -
HTTP//Engigdio.COM/Actudio/USE-Excel计算器D电平移位器电阻值
Excel电子表格附加到Calc值。
对于PWM积分器来说，一个简单的RC网络是多余的。本AP注释讨论了
在RC滤波器中的稳定时间和纹波。
HTTP://www. Ti.COM/LIT/AN/SLYT076/SLYT076PDF
问候，Dana。
121232.XLS
12 K



     以下为原文
   Always examine data sheets to see if you are working withg R-R Inputs
     and outputs, otherwise limited CM range will limit pk-pk swings.
      
     To offset signals into PSOC you can ac couple to a simple divider that
     supplies the offset to the input. Or you can use the following which eliminates
     couplig cap, just uses two R's -
     http://electronicdesign.com/analog/use-excel-calculate-d-level-shifter-resistor-values
      
     Excel spreadsheet to calc values attached.
      
     For PWM integrator, a simple RC network offten surfices. This ap note discusses tradeoff of
     settling time and ripple in the RC filter.
      
     http://www.ti.com/lit/an/slyt076/slyt076.pdf
      
      
     Regards, Dana.

•   121232.xls 12.0 K