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EL4089CN Datasheet(PDF) 8 Page - Elantec Semiconductor |
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EL4089CN Datasheet(HTML) 8 Page - Elantec Semiconductor |
8 / 8 page EL4089C DC Restored Video Amplifier Table of Charge Storage Capacitor vs Droop Charging Rates Cap Value Droop in 60 ms Charge in 12 ms Charge in 4 ms nF mV mV mV 10 6 36 120 33 18 11 36 100 06 36 12 Basic formulae are V (droop) e Iba (Line time b Sample time) Capacitor and V (charge) e IOUT Sample time Capacitor For best results the source impedance should be kept low using a buffer for example Because the SH effectively shorts the input sig- nal during Sample the input should not be sam- pled during active video Typically the sample is made during the back porch period of horizontal blanking For this reason color composite signals which have color burst on the back porch can not be passed See EL2090 or EL4093 for this ap- plication General Disclaimer Specifications contained in this data sheet are in effect as of the publication date shown Elantec Inc reserves the right to make changes in the circuitry or specifications contained herein at any time without notice Elantec Inc assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement Elantec Inc 1996 Tarob Court Milpitas CA 95035 Telephone (408) 945-1323 (800) 333-6314 Fax (408) 945-9305 European Office 44-71-482-4596 WARNING Life Support Policy Elantec Inc products are not authorized for and should not be used within Life Support Systems without the specific written consent of Elantec Inc Life Support systems are equipment in- tended to support or sustain life and whose failure to perform when properly used in accordance with instructions provided can be reasonably expected to result in significant personal injury or death Users contemplating application of Elantec Inc products in Life Support Systems are requested to contact Elantec Inc factory headquarters to establish suitable terms conditions for these applications Elantec Inc’s warranty is limited to replace- ment of defective components and does not cover injury to per- sons or property or other consequential damages Printed in USA 8 |
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