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TLV3604 Folha de dados(PDF) 10 Page - Texas Instruments |
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TLV3604 Folha de dados(HTML) 10 Page - Texas Instruments |
10 / 17 page LE/HYS OUT IN t>tsetup tpHL Figure 8-2. Short Input Pulse Properly Latched LE/HYS IN t PL OUT Figure 8-3. Latch Disable with Input Change 8.1.4 Adjustable Hysteresis Because of a comparator’s high open loop gain, there is a small band of input differential voltage where the output can toggle back and forth between a “logic high” and a “logic low”. A clean input signal with fast slopes can pass this band quickly without problems. For slower and noisier signal slopes however, passing this band may cause the comparator output to switch back and forth between a "logic high" and a "logic low". This issue can be addressed by hysteresis, which is a positive feedback loop that adjusts the trip point of the comparator depending on its current output state. The TLV3604 by default does not have any internal hysteresis. The TLV3605 has a LE/HYST pin that can be used to increase the internal hysteresis of the part. The LE/HYST pin on this device can be modeled as a 1.25V voltage source in series with a 40k resistor. To change the internal hysteresis of the comparator, connect a single resistor as shown in the Figure 8-4 between the LE/HYST pin and VEE. When this resistor is left floating, the device will have 0mV of internal hysteresis. TLV3604 SNOSDA2A – AUGUST 2020 – REVISED AUGUST 2020 www.ti.com 10 Submit Document Feedback Copyright © 2020 Texas Instruments Incorporated Product Folder Links: TLV3604 |
Nº de peça semelhante - TLV3604 |
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Descrição semelhante - TLV3604 |
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