Gives overview of basic photoiode application and then provides a
number of transistor and opamp based application circuits which
demonstrate practical aspects.  Brief but more than usually usefuil.

Sharp "Photodiode/Phototransistor Application Circuit" App Note.
1999  Reference Code SMA99017
6 pages

          http://vorlon.case.edu/~flm/eecs245/Datasheets/Sharp%20photodevic=
es.pdf
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