Patent ID: 11965847
Assignee: NXP B.V.
Field: Measurement (Instruments)
Classification: CPC G  A | IPC G

Claim 0:
1. An analog front end comprising:
a controller;
an electrode driver stage configured to be coupled to electrodes of an electrochemical sensor;
wherein the electrodes include a Reference Electrode (RE), a Counter Electrode (CE), and a set of Work Electrodes (WEs);
measurement channels coupled to the electrode driver stage to receive an electrode signal from the electrodes and to generate measurement results,
wherein the measurement channels are configured to switch configurations to perform different measurements;
wherein the electrode driver stage includes a set of WE buffers configured to drive the set of WEs, and an RE buffer to drive the RE; and
wherein the controller sets a voltage at each of the WE buffers and a voltage at the RE buffer with a voltage difference to configure each of the measurement channels in different sink/source output current modes.