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Photodiode Detectors

A silicon p–n junction photodiode has junction area 1 cm2, and doping levels 1014 and 1016 cm–3 on the n and p sides, respectively. It is reverse biased with 15 V and a 10 k_ load resistor is used. (a) Determine the 3 dB electrical bandwidth due to the RC time constant. (b) Determine the bandwidth due to the hole transit time. (c) What is the limiting bandwidth in this case?


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