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LMV7219

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SNOS458I – APRIL 2000 – REVISED JUNE 2016

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Typical Application (continued)

(2)

5. Calculate R2 as follows:

(3)

6. Verify the trip voltage and hysteresis as follows:

(4)

This method is recommended for additional hysteresis of up to a few hundred millivolts. Beyond that, the

impedance of R3 is low enough to affect the bias string and adjustment of R1 may be also required.

8.2.2.2 Zero-Crossing Detector

The inverting input is connected to ground and the non-inverting input is connected to 100mVp-p signal. As the

signal at the non-inverting input crosses 0 V, the comparator's output Changes State.

Figure 15. Zero-Crossing Detector

8.2.2.3 Threshold Detector

Instead of tying the inverting input to 0 V, the inverting input can be tied to a reference voltage. The non-inverting