Noise will be transferred to output when mapping through a transfer function because noise cause the signal to cross the threshold more than once. Transfer function is not symmetric such as the rising and falling of signal follow a different transfer functions. The difference between the 2 transfer function added buffer to the noise and thus increased noise resistance Gate that include hysteresis was invented by Schmitt. The cost for Schmitt trigger gate is more expensive to produce because they are more complex.
No comments:
Post a Comment