Eingangsschaltung zum Empfang von Elektrodensignalen, Biopotentialsignalsensorsystem, Neuralsonde und Verfahren zur Verstärkung von Elektrodensignalen

Details

Veröffentlichungs-Nr.

EP4030174

Aktenzeichen

EP21152118

Anmeldetag

18. Januar 2021

Veröffentlichung

14. Mai 2025

Erteilung

14. Mai 2025

Rechtsraum

EP

IPC

G01R19/25A61B5/30G01R19/00A61B5/304A61B5/31A61B5/00

Abstract

An input circuitry for receiving electrode signals comprises: a plurality of channels (110) for providing a multiplexed electrode signal input, each channel (110) comprising a multiplexing switch (114) for selecting one channel (110) at a time, and an input transistor (112) configured to be connected to an electrode (102; 402; 502), wherein the input transistor (112) is configured to receive an electrode signal at a gate; and a reference input transistor (142), which is configured to be connected to a reference voltage at a gate; wherein an electrode signal received at a selected channel (110) together with the reference voltage form input signals to an instrumentation amplifier; wherein the input circuitry (100) is configured such that the input transistor (142) of the selected channel (110) forms part of a first flipped voltage follower (120) and the reference input transistor (142) forms part of a second flipped voltage follower (140).

Anmelder

Firma

Imec VZW

Land

🇧🇪 Belgien

Fachgebiete