Chopper stabilized analog front-end IC with improved ripple reduction loop

This paper presents a chopper stabilized analog front-end (AFE) IC with enhanced ripple reduction loop for resistive sensor application. The chopper stabilization is effective solution to reduce the low frequency noise, however, suffers from severe output ripple due to the modulated amplifier offset. We proposed a chopper stabilized resistive AFE with improved ripple reduction loop (RRL). The proposed RRL can achieve low noise and low power characteristics while maintaining small circuit area consumption.