Faculté des sciences

Effective static response compensation suitable for low-power ASIC implementation with an application to pressure sensors

Berthoud, Christophe ; Ansorge, Michael ; Pellandini, Fausto

In: Instrumentation and Measurement Technology Conference (IMTC). Conference Proceedings. 'Quality Measurements : The Indispensable Bridge between Theory and Reality'., 1996, vol. 2, p. 1168 - 1173

This paper presents an efficient all-digital compensation technique for sensors measuring static or slowly-varying quantities such as pressure. The proposed solution compensates the temperature dependencies and further non-linearities affecting the accuracy and measurement range of the sensors. In addition, for the considered pressure sensors, the trimming that is usually performed in factory can... More

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    Summary
    This paper presents an efficient all-digital compensation technique for sensors measuring static or slowly-varying quantities such as pressure. The proposed solution compensates the temperature dependencies and further non-linearities affecting the accuracy and measurement range of the sensors. In addition, for the considered pressure sensors, the trimming that is usually performed in factory can be replaced by a measure of the sensor characteristics to be used for the digital sensor compensation. The whole design procedure, starting from the description of the pressure sensors down to the low-power ASIC implementation of the processor architecture is discussed in detail.