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Can't find any switched capacitance TIA device

Question asked by s.parsnejad on Jan 4, 2016

Hi

 

I'm trying to build an electrochemical interface. Basically its a trans-impedance amplifier (TIA). I need to have a high precision variable gain TIA. I was originally aiming to using something along the lines of a logarithmic or a switch-cap style TIA. Logarithmic is out now however, I cant find any device that is a switched-cap based TIA in ti, analog or any other manufacturer website!

 

This takes me by surprise since in research switch-caps play a very prominent role. Am I looking in the wrong places or is there something I am missing here?

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