Analogue Behavioural Modelling of Integrated Sensors

Fully signal conditioned single chip sensors offer several advantages over discrete sensors with interface electronics. These devices have good to excellent linearity and system designers realize many advantages when using this monolithic sensors for new applications. Unfortunately there is insufficiency of models describing electrical behaviour of such integrated sensors. In order to simulate this devices with modern electronic design automation tools the implementation of accurate SPICE oriented models, is imperative. In this paper a design methodology for analogue behaviour modelling is presented. Following the suggested approach the basic structure of the integrated sensor is invented. In such a way pressure, humidity and temperature sensors are modelled and their base operating characteristics are simulated. The appended results pointed to sufficient fitting between simulated and data sheet´s parameters. The suggested design methodology can be successfully adopted and applied to describe the behaviour of other devices converting any physical phenomena into voltage