ABSTRACT
The monitoring of biopotential signals such as EEG, ECG, and
EMG is a common procedure in modern clinical practice. The
instruments that canmonitor these signals are traditionally realized
by combining precision building blocks with powerful DSPmodules.
The growing interest toward the improvement of patients’ quality of
life and the use of biopotential signals in nonmedical applications
such as entertainment, sports, and brain-computer interfaces re-
quires the implementation ofminiaturized andwireless biopotential
acquisition systems with ultra-low power dissipation. This has
dramatically changed the way of developing instruments for the
extraction of biopotential signals, placing stringent constraints
on the design of analog front-end circuits that can be used in
ambulatory biopotential monitoring applications. In addition, the
ambulatory monitoring of patients has introduced new challenges
that can jeopardize the signal integrity.
