redhat
Advanced Member level 4
Comparator problem
i have a signal that has output levels of 0 and 5v ,i want to shift the levels to -5v for 0 and 5v for 5v so i used LM139 comparator but the output have some undesired oscillations although i use positive feedback,the input signal frequency is 100kHz and if i increase the frequency to 1Mhz the output signal is distorted ,i made the simulation using multism 7,so how can i overcome this problem?
thanks in advance
i have a signal that has output levels of 0 and 5v ,i want to shift the levels to -5v for 0 and 5v for 5v so i used LM139 comparator but the output have some undesired oscillations although i use positive feedback,the input signal frequency is 100kHz and if i increase the frequency to 1Mhz the output signal is distorted ,i made the simulation using multism 7,so how can i overcome this problem?
thanks in advance