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EPC130 Datasheet(PDF) 5 Page - Espros Photonics corp |
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EPC130 Datasheet(HTML) 5 Page - Espros Photonics corp |
5 / 9 page epc130/epc131 Functional Description Power-up Sequence If VDD reaches VPOR, the startup sequence is initiated. After the time tDEL, the photo diode bias circuit is enabled. Thus, a current generated by light on the photo diode flows into the pin PD. After the time tINIT, the device is ready to receive AC light pulses. Power-up sequence Power-down Sequence When VDD goes down, the device is turned off when V DD is below VPOR minus VIPOR. Power-down sequence Light Pulse Reception A light pulse on the photo diode generates a current puls into the pin PD of the device. This current pulse is transformed to a voltage pulse and amplified. The signal form is dependent on the input pulse width, its slew rate and its strength. The value of the undershoot is als heavily dependent on the input signal. If the input signal is too strong, the output signal becomes saturated close to V DD, or VSS respectively. After a waiting time given by tREC, the next light pulse can be sent. If the waiting time is too short, the output signal of the next pulse is biased. Light pulse reception © 2011 ESPROS Photonics Corporation Characteristics subject to change without notice 5 Datasheet epc13x analog - V2.1 www.espros.ch V DD V POR t INIT Startup Period Ready Out undefined output signal V DD V POR - V IPOR t OFF PD bias IR LED Pulse T IR LED T PD PD Signal Out Signal V OF t REC V PK |
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Similar Description - EPC130 |
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