LMP7300MM datasheet(12/30 Pages) TI1

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VREF

VIN

VOUT

OUTPUT

STATE

GND

2.048V

GND

INP

INN

HYSTP

HYSTN

VREF

OUT

VIN

RPULLUP

1 M:

VIN

VOUT

OUTPUT

STATE

VIL = VREF -10 mV

-10 mV

+3 mV

VIL

VREF

VIH

VIH = VREF +3 mV

LMP7300

SNOSAT7G – AUGUST 2007 – REVISED OCTOBER 2015

www.ti.com

Feature Description (continued)

Figure 13. Typical Micropower Application to Set Asymmetric Positive and

Negative Hysteresis of

−10 mV, 3 mV

When VID = 0, INN = INP = VTH

Figure 15 shows the configuration with no hysteresis when the HYSTP and HYSTN pins are connected together

to VREF. TI does not recommend this configuration because it has the highest level of false triggers due to the

system noise.

Figure 14. Typical Configuration for No Hysteresis

Figure 15. Typical Configuration for No Hysteresis

Figure 17 shows the configuration with symmetric hysteresis when the HYSTP and HYSTN pins are connected

to the same voltage that is less than VREF. The two trip points set a hysteresis band around the input threshold

voltage VREF, such that the positive band is equal to the negative band.

This configuration controls the false triggering mentioned in Figure 15. For precise level detection applications, TI

recommends symmetric hysteresis values less than 5 mV to 10 mV.

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