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EPC112-QFN16 Datasheet(PDF) 7 Page - Espros Photonics corp |
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EPC112-QFN16 Datasheet(HTML) 7 Page - Espros Photonics corp |
7 / 14 page epc111/112 Light Reserve Output OUTH However, if the incoming signal is just at the trigger threshold of OUTN, an unstable situation can occur. Thus, a second output OUTH is integrated with a higher trigger threshold to indicate that a certain 'light reserve' is reached (see Figure 3). This output is usually used to drive a visible LED to indicate to the operator a stable detection function of the light barrier. To have not too short pulses OUTH, this signal is stimulated by signal OUTH Filter and synchronously reset by OUTN. The trigger threshold of OUTH is set approx. 50% above the trigger threshold of OUTN. OUTN Filter OUTH Filter OUTN OUTH Emitter LED Figure 5: synchronization OUTH with OUTN This output is not CMOS compatible. Its voltage is depending of the load according to Figure 6. To have still digital compatible signals a level conversion is necessary. File: Unbenannt This document is confidential and protected by law and international trades. It must not be shown to any third party nor be copied in any form without our written permission . OUTH low min.: 3.0V / + 85ºC OUTH low max.: 3.6V / - 40ºC OUTH low typ. OUTH high max. Voltage OUTH [V] Figure 6: Output voltage versus output current of output OUTH © 2011 ESPROS Photonics Corporation Characteristics subject to change without notice 7 Datasheet epc111_112 - V2.2 www.espros.ch |
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