The selection of the appropriate sensor design and technology depends
on a number of further specifications that may vary widely from one
application to another. Solid-state magnetic sensors are characterized
by using some figures of merit, such as
- availability and cost of technology
- application environment: temperature, humidity and chemical stress,
vibrations and mechanical stress
- geometry: field parallel or perpendicular to chip surface
- sensitivity, signal level
- magnetic field resolution, signal-to-noise ratio:
accuracy (absolute) and precision (relative)
- spatial resolution
- time resolution, frequency response
- linearity of magnetic response
- temperature coefficient of sensitivity
- offset and its temperature dependence
- power consumption, size, weight
- electrical input and output impedance
- stability, reliability, lifetime
- testability of above specifications
Rodrigo Torres
2003-03-26
