Patent ID: 11949297
Assignee: COVIDIEN LP
Field: Medical technology (Instruments)
Classification: CPC A  H  G | IPC A  G  H

Claim 9:
10. A method of calibrating a measurement circuit of a differential sensor, the method comprising:
setting a gain constant for the measurement circuit;
determining a bias voltage function of the measurement circuit to compensate for manufacturing tolerances and temperature drift of the differential sensor including:
determining a first component of the bias voltage function of the measurement circuit which is independent of a temperature of the differential sensor;
determining temperature dependent function for a second component of the bias voltage function of the measurement circuit; and
generating the bias voltage function from the first and second components of the bias voltage function; and

programming the bias voltage function into an offset controller of the measurement circuit, the offset controller configured to receive a temperature signal from a temperature sensor and to generate a bias voltage from the bias voltage function in response to receiving the temperature signal.