V

+

VREF2

VREF1

BOTH OUTPUTS

ARE HIGH

OUTPUT A

OUTPUT B

VIN

V

+

R1

R2

R3

-

+

-

+

OUTPUT A

OUTPUT B

VREF2

VREF1

A

B

VIN

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22

LPV7215

SNOSAI6J – SEPTEMBER 2005 – REVISED AUGUST 2016

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Typical Applications (continued)

8.2.2 Window Detector

A window detector monitors the input signal to determine if it falls between two voltage levels.

The comparator outputs A and B are high only when VREF1 < VIN < VREF2 or within the window. These are defined

as:

VREF1 = R3 / (R1+ R2 + R3) × V

+

(11)

VREF2 = (R2+ R3) / (R1 + R2 + R3) × V

+

(12)

Others names for window detectors are: threshold detector, level detectors, and amplitude trigger or detector.

Figure 40. Window Detector

Figure 41. Window Detector Output Signal