Instrumentation amplifier with built-in digitally-programmable input capacitance cancellation
The mechanism:ΓÇóDoesnΓÇÖt consume any extra power as compared to prior art mechanismsΓÇóAvoids use of additional amplifier(s) for generating negative capacitanceΓÇóSignificantly improves the input impedance from few mega-ohms to above 500 mega-ohmsΓÇóEffectively uses dry electrodes that are better suited for long-term monitoring as compared to wet electrodes used conventionallyΓÇóDoesnΓÇÖt affect the important performance parameters such as common-mode rejection ratio, power supply rejection ratio, etc., unlike prior art techniquesΓÇóWould be commercially useful for various applications such as:oLong-term brain signal monitoring such as EEGoDry contact measurements with Ag/AgCl electrodes
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美国
