LMV7271_08 NSC [National Semiconductor], LMV7271_08 Datasheet - Page 11

• Manufacturer Part Number: LMV7271_08
• Description: Single & Dual, 1.8V Low Power Comparators with Rail-to-Rail Input
• Manufacturer: NSC [National Semiconductor]

Non-Inverting Comparator with Hysteresis
A non-inverting comparator with hysteresis requires a two re-
sistor network, and a voltage reference (V
input (Figure 4). When V
the output to switch from low to high, V
V
IN1
, where V
IN1
is calculated by
IN
is low, the output is also low. For
FIGURE 3. Inverting Comparator with Hysteresis
REF
IN
) at the inverting
must rise up to
11
When V
parator switch back to its low state, V
before V
The hysteresis of this circuit is the difference between V
and V
IN2
IN
A
.
will again equal V
is high, the output is also high. To make the com-
ΔV
IN
= V
REF
CC
. V
R
IN
20064042
1
/R
can be calculated by:
2
IN
must equal V
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REF
IN1