An alternative linear topology for conditioning resistive sensors

This paper presents an alternative linear topology for conditioning resistive sensors. This topology allows us to obtain an inherently linear relationship between the variable measured by the sensor and its corresponding output, which is not always valid for the topologies most commonly employed in industrial applications, such as the Wheatstone bridge. SPICE simulations of this alternative topology as a CMOS integrated circuit in 0.5μm technology has demonstrated not only its functionality and linearity, but also its superiority over the Wheatstone bridge.