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Understand and apply the transimpedance amplifier (Part 1)

Posted: 08 Aug 2007     Print Version  Bookmark and Share

Keywords:transimpedance  op amps  feedback resistor  capacitor 

Most engineers know that to design a transimpedance amplifier circuit, they just need a large-enough resistor to convert the input current to a reasonable output voltage range. To stabilize this circuit, a large enough capacitor must be placed in parallel with the feedback resistor. This article will show how to calculate the value for the feedback capacitor to ensure that the design has the largest possible bandwidth, and will still be stable.

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