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TL331LVDBVR Fiches technique(PDF) 31 Page - Texas Instruments

No de pièce TL331LVDBVR
Description  TL331LV, TL391LV, LM393LV and LM339LV Low Voltage Rail to Rail Input Comparators
PDF  71 Pages
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Fabricant  TI2 [Texas Instruments]
Site Internet  https://www.ti.com
Logo TI2 - Texas Instruments

TL331LVDBVR Fiches technique(HTML) 31 Page - Texas Instruments

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7.2.8 Zero Crossing Detector
R4
100 NŸ
R1
5 NŸ
+V
R2
5 NŸ
VIN
R4
20 0Ÿ
+
±
R5
10 NŸ
R3
100 NŸ
D1
BAT54
VOUT
V1
V2
V3
R1 = R2 = (R5 / 2)
RPU
10 NŸ
Figure 7-17. Zero Crossing Detector
A voltage divider of R4 and R5 establishes a reference voltage V1 at the non-inverting input. By making the
series resistance of R1 and R2 equal to R5, the comparator will switch when VIN = 0. Diode D1 insures that
V3 clamps near ground. The voltage divider of R2 and R3 then prevents V2 from going below ground. A small
amount of hysteresis is setup to ensure rapid output voltage transitions.
www.ti.com
TL331LV, TL391LV, LM393LV, LM339LV
SNOSDA4D – JUNE 2020 – REVISED NOVEMBER 2023
Copyright © 2023 Texas Instruments Incorporated
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Product Folder Links: TL331LV TL391LV LM393LV LM339LV



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