XPost: sci.electronics.design   
   From: invalid@invalid.invalid   
      
   Phil Hobbs wrote:   
   > Hi, all,   
   >   
   > Most of the time I just model photodiodes as current sources with   
   > parallel capacitances, and put in any deviations by hand afterwards.  At   
   > the moment I have an application where I need to do rather better than   
   > that, to explore the tradeoff between speed, bias voltage, and quantum   
   > efficiency.  (It may wind up with custom photodiodes.)   
   >   
   > The only thing I've found in the free literature is a strange paper from   
   > some Serbian guys who use, like, 100 subcircuits to model one   
   > photodiode.   
   >   
      
   The Eurocon paper from Lasovic et al? That almost had me clobbered once,   
   but then again I am not exactly the big whizbang math genius.   
      
      
   > I'm sure it would be good for my soul to do an approximate analytic   
   > solution of carrier transport as a function of device geometry and stick   
   > that in as a behavioural model, but at the moment I'm too busy and too   
   > lazy.   
   >   
   > Does anybody have a reference to a photodiode model that includes   
   > transit time, high level injection, and bias dependence?   
   >   
      
   Not all of that but maybe this helps in the search:   
      
   http://www.nsti.org/publications/MSM/2001/pdf/302.pdf   
   http://lib.semi.ac.cn:8080/tsh/dzzy/wsqk/spie/vol6621/66211e.pdf   
   http://spie.org/x648.html?product_id=790834   
      
   L. Ravezzi, G. F. Dalla Betta, D. Stoppa, A. Simoni, "A versatile   
   photodiode SPICE model for optical microsystem simulation" in   
   MICROELECTRONICS JOURNAL, v. 31, n. 4 (2000), p. 277-282   
      
   --   
   Regards, Joerg   
      
   http://www.analogconsultants.com/   
      
   --- SoupGate-Win32 v1.05   
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