Circuitry for analyte measurement
AssigneeCirrus Logic, Inc.
InventorsJohn P. Lesso, Toru Ido
Life of this patent
Estimating the term…
Abstract
Circuitry for measuring a characteristic of an electrochemical cell, the circuitry comprising: a comparator having a first comparator input, a second comparator input and a comparator output; a feedback path between the comparator output and the second comparator input configured to provide a feedback signal to the second comparator input; an integrator in the feedback path, the integrator comprising a data input coupled to the comparator output and in integrator output; and a loop filter configured to apply filtering to the feedback path to generate the feedback signal, wherein the loop filter comprises the electrochemical cell.
Claims28
Circuitry for measuring a characteristic of an electrochemical cell, the circuitry comprising:
- a comparator having a first comparator input, a second comparator input and a comparator output;
- a feedback path between the comparator output and the second comparator input configured to provide a feedback signal to the second comparator input;
- an integrator in the feedback path, the integrator comprising a data input coupled to the comparator output and an integrator output;
- and
- a loop filter configured to apply filtering to the feedback path to generate the feedback signal, wherein the loop filter comprises the electrochemical cell.
Circuitry for measuring first and second characteristics of an electrochemical cell comprising a first working electrode, a second working electrode and a counter electrode, the circuitry comprising:
- a first comparator having a first comparator input, a second comparator input and a first comparator output;
- a first feedback path between the first comparator output and the second comparator input configured to provide a first feedback signal to the second comparator input;
- a first loop filter configured to apply filtering to the first feedback path to generate the first feedback signal, wherein the loop filter comprises the electrochemical cell;
- a second comparator having a third comparator input, a fourth comparator input and a second comparator output;
- a second feedback path between the second comparator output and the fourth comparator input configured to provide a second feedback signal to the fourth comparator input;
- and
- a second loop filter configured to apply filtering to the second feedback path to generate the first feedback signal, wherein the second loop filter comprises the electrochemical cell.
Dependencies are inferred from the claim text.