INA199: AC Current sensing with Current transformer

Part Number: INA199

Hello,

I've tried to use INA199A1 for measuring the AC current sensing using the Current transformer, and I've attached the schematic from google source. 

Now, I'm receiving output from the same circuit, but my prob is the output with 50/5 CT or any other CT was non-linear in which I can't able to measure the linear output with Microcontroller, it is difficult to show the proper output with the display. Instead of R1 and R33, I've used only one 0R10/2010/1% resistor because I need to measure the current with 1000/5 CT.

I also tried with INA181A1 with the same circuit also receiving the same prob, kindly please suggest a solution to resolve the prob.

Thanks in Advance,

M.EAZHILARASAN