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50 Hz line frequency noise filter

Other Parts Discussed in Thread: RC4580, OPA1678, OPA2333-HT, LMC662, LMP7702

Hi

Want to know if there is a chip available to filter 50 Hz line frequency noise.

Tried fliege notch filter using LMC 662 opamp but, was unable to effectively filter the noise. The filter circuit  introduced small DC positive offset with ripple ( not 50 Hz ripple but higher frequency)

Kindly suggest an effective solution

Regards

Kiran