• Low power consumption : <10 μW

• Low noise : <1 μVrms

• Large input swing : >200 mVPP

• Wide dynamic range : >90 dB

• High CMRR : >70 dB

• High input impedance : >100 MΩ

Dedicated Solution for ExG Biosignal

• With chopper stabilization

  • Low 1/f noise and high CMRR(Common Mode Rejection Ratio)

  • Additional amplifier required for input impedance boosting due to low Zin

• Without chopper stabilization

  • Vulnerable to 1/f noise and common-mode interference

  • High Zin

** Impedance boosting technique should be applied for low noise and high impedance implementation

• Electrode DC offset

• Electrode impedance

• Common-mode artifacts

• Circuit noise

Obstacles in ExG Biosignal Acquisition

Low Noise vs High Impedance