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LMV7291 датащи(PDF) 11 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
номер детали LMV7291
подробное описание детали  Single 1.8V Low Power Comparator with Rail-to-Rail Input
PDF  14 Pages
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производитель  NSC [National Semiconductor (TI)]
домашняя страница  http://www.national.com
Logo NSC - National Semiconductor (TI)

LMV7291 датащи(HTML) 11 Page - National Semiconductor (TI)

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Application Notes (Continued)
Non-Inverting Comparator with Hysteresis
A non-inverting comparator with hysteresis requires a two
resistor network, and a voltage reference (V
REF) at the in-
verting input (Figure 4). 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 VIN1 is calculated by
When V
IN is high, the output is also high. To make the
comparator switch back to its low state, V
IN must equal VREF
before V
A will again equal VREF.VIN can be calculated by:
The hysteresis of this circuit is the difference between V
IN1
and V
IN2.
∆V
IN =VCCR1/R2
20080042
FIGURE 3. Inverting Comparator with Hysteresis
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