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LMV331M5X bảng dữ liệu(PDF) 11 Page - Texas Instruments

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tên linh kiện LMV331M5X
Giải thích chi tiết về linh kiện  General-Purpose, Low-Voltage, Tiny Pack Comparators
PDF  38 Pages
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nhà sản xuất  TI1 [Texas Instruments]
Trang chủ  http://www.ti.com
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LMV331M5X bảng dữ liệu(HTML) 11 Page - Texas Instruments

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LMV331-N, LMV339-N, LMV393-N
www.ti.com
SNOS018H – AUGUST 1999 – REVISED DECEMBER 2014
Application Information (continued)
The total hysteresis provided by the network is defined as:
ΔVa = Va1 - Va2
(3)
To assure that the comparator will always switch fully to VCC and not be pulled down by the load the resistors
values should be chosen as follow:
RPULL-UP << RLOAD
(4)
and R1 > RPULL-UP.
(5)
Figure 11. Inverting Comparator With Hysteresis
8.1.2.1.1
Non-inverting Comparator With Hysteresis
Non-inverting comparator with hysteresis requires a two resistor network, and a voltage reference (Vref) at the
inverting input. When Vin is low, the output is also low. For the output to switch from low to high, Vin must rise up
to Vin1 where Vin1 is calculated by:
(6)
When Vin is high, the output is also high. To make the comparator switch back to its low state, Vin must equal Vref
before VA will again equal Vref. Vin can be calculated by:
(7)
The hysteresis of this circuit is the difference between Vin1 and Vin2.
Copyright © 1999–2014, Texas Instruments Incorporated
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Product Folder Links: LMV331-N LMV339-N LMV393-N



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