Hi ,
The output of the filter will be depending on multiple factors like passband ripple, stopband ripple, and filter coefficients. Due to this, the output will be different. You can check this out by unchecking the box of Design minimum order filter and comparing both the cases, you can observe that the values are completely different.
In the case of the derivative block, the major functionality of the block is to differentiate, and it gives us the expected output.
Hope this helps!!
