Hi, a question about a simple circuit,probably faced since decades ago.
In the basic scheme of comparator with hysteresis when the output is high the hysteresis value is depending by resistors and the voltage that supplie s the output pullup resistor. When the output is low ,theV0L is the saturation voltage of the output BJT.
In case of an LM393(i admit this is not an high end component)@1ma V0L changes about 20mV from 25 to 85%,furthermore the saturation voltage typica l is 250mV,max is 400mV. What can be done to minimize this? Thanks.
Please, forgive my english error and imperfections. Diego Italy