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AD8367 cascaded with AD8368

Question asked by arunverma26 on Dec 2, 2014
Latest reply on Dec 2, 2014 by jdobler



I am cascading AD8367 and AD8368 in AGC mode. Individually both are working fine but when i cascade i am not getting the desired output. AD8367 has a gain control of 42dB while AD8368 has around 22dB. I am expecting a dynamic range of minimum 60dB , but only getting around 45dB. Can we cascade these two devices or anything we need to change from the evaluation design.