LMV331 Single / LMV393 Dual / LMV339 Quad
10008025
FIGURE 2. Inverting Comparator with Hysteresis
NON-INVERTING COMPARATOR WITH HYSTERESIS
Non inverting comparator with hysteresis requires a two re-
sistor network, and a voltage reference (V
ref
) at the inverting
input. When V
in
is low, the output is also low. For the output
to switch from low to high, V
in
must rise up to V
in1
where
V
in1
is calculated by
When V
in
is high, the output is also high, to make the com-
parator switch back to it's low state, V
in
must equal V
ref
before
V
A
will again equal V
ref
. V
in
can be calculated by:
10008022
FIGURE 3.
The hysteresis of this circuit is the difference between V
in1
and
V
in2
.
ΔV
in
= V
CC
R
1
/R
2
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