Hi all, I am new here and just have a simple question which I need help with from the knowledgeable group on this forum. I recently built a simple photodetector circuit using an operational amplifer, using a design I took directly from a Texas Instruments datasheet. I can't seem to upload a picture, but it is the first diagram on this pdf: (http://www.ti.com/lit/ds/sbos250e/sbos250e.pdf) labelled "High Gain, 20 MHz Transimpedance Amplifier".
My question is, what is the purpose of the resistors and capacitors connected to the non-inverting input? I undestand the point of the feedback resistor and capacitor, but cannot seem to find any information about the other passive components. If someone would be so kind to give me some advice as to their purpose or perhaps point me in the direction of a good website or book I would greatly appreciate it.
My question is, what is the purpose of the resistors and capacitors connected to the non-inverting input? I undestand the point of the feedback resistor and capacitor, but cannot seem to find any information about the other passive components. If someone would be so kind to give me some advice as to their purpose or perhaps point me in the direction of a good website or book I would greatly appreciate it.