Dear Rohit,
thanks for the reply. Your one colleague, Mr. Charles, has suggested to use 100nF/100V capacitor for floating supply VPF/VNF. And you are suggesting 11.1uF=11100nF. Are you sure it is 11.1uF . Because the difference between two suggested values are quite large. waiting for your reply.
http://e2e.ti.com/support/other_analog/imaging_afes/f/239/t/226250.aspx
samir