A Fully Integrated Analog Front End for Biopotential Signal Sensing.

A low-power fully-integrated analog front end for biopotential sensors is proposed. The signal conditioning circuitry features an integrating sampler and a digital-assisted electrode offset-cancellation loop. The chip is fabricated in a standard 0.18-μm CMOS process. The supply voltage is 1.2 V and the quiescent current is 7.7 μA. Measurement results show that the analog front end achieves an in-b...