LMV7291MGX/NOPB National Semiconductor, LMV7291MGX/NOPB Datasheet - Page 11

• Manufacturer Part Number: LMV7291MGX/NOPB
• Description: IC COMPARATOR 1.8V R-R LP SC70-5
• Manufacturer: National Semiconductor
• Series: PowerWise®r
• Type: General Purposer

Specifications of LMV7291MGX/NOPB

• Number Of Elements: 1
• Output Type: CMOS, Push-Pull, Rail-to-Rail
• Voltage - Supply: 1.8 V ~ 5 V, ±0.9 V ~ 2.5 V
• Mounting Type: Surface Mount
• Package / Case: 6-TSSOP (5 lead), SC-88A, SOT-353
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LMV7291MGX

Application Notes
Non-Inverting Comparator with Hysteresis
A non-inverting comparator with hysteresis requires a two
resistor network, and a voltage reference (V
verting input (Figure 4). When V
low. For the output to switch from low to high, V
up to V
IN1
, where V
IN1
is calculated by
(Continued)
IN
is low, the output is also
FIGURE 3. Inverting Comparator with Hysteresis
REF
IN
) at the in-
must rise
11
When V
comparator 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
∆V
IN
= V
REF
CC
. V
R
20080042
1
IN
/R
can be calculated by:
2
IN
must equal V
www.national.com
REF
IN1