In the above circuit the underlined IC AD8606 is getting heated up. At the node marked (low pass filter output) the current is high when i checked in ADIsimPE simulation software. how can this problem be overcomed?
How is your circuit coming along so far? I think it would be easy for you to just maintain your original schematic and replace the AD8606 parts with any one of these: ADA4610-2 (Dual), ADA4610-4(Quad) and ADA4000-4(Quad). These parts really suits to your application.
Let me know if you need anything else.