M
Mook Johnson
I'm looking to use a LM311 to square up a signal from a opamp on +/-15V
rails.
The configuration I'm using is to have positive feedback to the +pin via a
100k resistor and a 10K resistor from the plus pin to ground. Output is 0 -
3.3V (1k pullup) so that gives about 300mV of hysteresis. The signal is
applied to the - pin.
I'd like to increase this to at least twice this level. I've been warned
not to give too much positive feedback or it will oscillate. How much
hysteresis have you guys gotten out of this part with this type of
configuraion.
The designs in the app note have a high parts count and I'd like to keep it
simple if possible.
rails.
The configuration I'm using is to have positive feedback to the +pin via a
100k resistor and a 10K resistor from the plus pin to ground. Output is 0 -
3.3V (1k pullup) so that gives about 300mV of hysteresis. The signal is
applied to the - pin.
I'd like to increase this to at least twice this level. I've been warned
not to give too much positive feedback or it will oscillate. How much
hysteresis have you guys gotten out of this part with this type of
configuraion.
The designs in the app note have a high parts count and I'd like to keep it
simple if possible.