I've done everything that is explained in "Improving Common-Mode Rejection Using the Right-Leg Drive Amplifier" and I can't get a Common Mode Rejection greater than 74dB. Someone Can explain me it with more details ????? I've read someone thas has said he has got a CMRR of 143dB but using a sin 2.4V 50hz. This test must be done using at least a sin 16vpp 50/60hz so i don't understand him.
Also I had tested an external circuit using TLC2264AI. I really need to solve this. Why Don't anyone answer me ????