P1AP.17 - Microcontroller Based Electrical Self-Test and Self-Calibration of MOX Sensor Systems
- 17th International Meeting on Chemical Sensors - IMCS 2018
2018-07-15 - 2018-07-19
- P-1 - Applications of Chemical Sensors
- M. Stahl-Offergeld, H. Hohe, D. Krause, M. Gorny - Fraunhofer Institute for Integrated Circuits IIS, Erlangen (Germany)
- 468 - 469
CMOS integrated sensor interfaces offer high performance on a small area. In general, CMOS processes have very good matching between the devices on chip, but absolute values can vary about more than 30%. For absolute measurements, it is necessary to calibrate every single chip. The sensor interface for MOX gas sensors, which was designed inside the FP7 project MSP, thus offers several self-test and self-calibration building blocks to reduce the calibration effort. Together with the microcontroller of the sensor system, it is possible to do the complete self-test and self-calibration of the system without additional measurement equipment.