Circuitry for measurement of electrochemical cells

Abstract

A circuitry for processing an analyte signal obtained from an electrochemical cell comprising a first electrode and a second electrode, comprises: a drive circuitry comprising a drive amplifier configured to apply a stimulus to the first electrode; a measurement circuitry comprising a measurement amplifier configured to measure a response at the second electrode of the electrochemical cell to the stimulus; an analog-to-digital converter (ADC) configured to output a digital output in dependence on the measured response; and a control circuitry operable to transition the circuitry between a measurement mode and a diagnostic mode, wherein: in the measurement mode, the measurement circuitry is configured with a first bandwidth for measuring an analyte at the second electrode of the cell; and in a diagnostic mode the measurement circuitry is configured with a second bandwidth for measuring an impedance of the second electrode of the cell, wherein the second bandwidth is greater than the first bandwidth.

Dependencies are inferred from the claim text.