Hello all, I have modelled a Transimpedance amplifier (TIA) using verilogA as a second order low pass filter so that I could observe the effect of gain peaking (by tuning the Q factor). Now, in order to flatten the TIA response, I would like to cascade my TIA with a variable gain amplifier (VGA). My existing TIA has a bandwidth of around 50 GHz and a gain of around 60 dBohm. I am interested in building a behavioral model for a VGA, just similar to a TIA using verilogA. My main focus is to flatten the TIA frequency response using the VGA response. Also, I would be interested to know how could I improve the bandwidth of the existing TIA using any suitable behavioral model. Any leads towards this would be great! Thanks!!
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