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LMV393L-S08-T Datasheet(PDF) 5 Page - Unisonic Technologies |
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LMV393L-S08-T Datasheet(HTML) 5 Page - Unisonic Technologies |
5 / 11 page LMV393 LINEAR INTEGRATED CIRCUIT UNISONICTECHNOLOGIESCO.,LTD 5 of 11 www.unisonic.com.tw QW-R104-004,A APPLICATION CIRCUITS(Cont.) When VIN > Va the output voltage is low close to ground. It can be presented as R2 // R3 in series with R1. The upper trip voltage Va2 is defined as The total hysteresis provided by the network is defined as: To assure that the comparator will always switch correctly, the resistors values should be chosen as follow: RPULL-UP << RLOAD and R1 > RPULL-UP. Non-Inverting Comparator with Hysteresis It requires a two resistor network to implement a non inverting comparator with hysteresis and with a voltage reference at the inverting input. So when VIN is low, the output is also low. If the output will switch from low to high, VIN must rise up to VIN1, and VIN1 can be calculated by: When VIN is high, the output is also high, in order to make the comparator switch back to low, VIN can be calculated by: The hysteresis of this circuit is the difference between VIN1 and VIN 2. |
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