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Dave's Circuits
Circuits designed by David Johnson, P.E.

Master Category List - Dave's Circuits
Last Updated on: Friday, April 25, 2008 04:12 PM


Transimpedance Amplifiers
40KHz MODULATED LIGHT DETECTOR
This circuit uses a unique cascode amplifier circuit to convert the current from a PIN photo diode to a current without any feedback network. It is very stable and very sensitive. The circuit shown has the potential for a conversion factor of 10 volts per microwatt at 900nm. I included a simple JFET post-amplifier with a gain of about 20.

Click on Drawing Below to view PDF version of Schematic

40KHz Light Receiver Front End Circuit designed by David A. Johnson, P.E. (June 14,2000)

Transimpedance Amplifiers
Master Schematic Category List - David A. Johnson, P.E.
 

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