Minimizing thermal noise and baseline wander in continuous clinical ambulatory ECG recording.
Chopper-stabilized amplifiers up-modulate DC electrode offset voltages beyond signal frequencies, eliminating 1/f flicker noise and achieving input-referred noise below 0.6 µVrms.
Active right-leg drive (RLD) loops suppress 50/60 Hz powerline interference by over 115 dB, preserving diagnostic ECG wave morphology during unshielded patient walking.