Measuring only 3x3x0.9 mm, the MagVector™ MV2 is a powerful magnetometer on a chip: three orthogonal Hall sensors measure (Bx,By,Bz); the “spinning current” technique minimises noise, offset and the Planar Hall Effect; a built-in temperature sensor permits temperature compensation; a programmable-gain amplifier provides measurement ranges from 0.1 to 30 T; and built-in ADCs and SPI (Serial Peripheral Interface) provide a digital interface in addition to an analog one.

A signal pin selects between the analog or digital interface. In analog mode, configuration options such as the measurement range are selected using control signals, whereas in digital mode all configuration parameters are transferred via SPI and stored in internal registers. Additional control signals and register bits provide fine control over the measurement process, for example the timing of the analog/digital conversion. In digital mode, multiple MV2s can be connected to a single SPI bus.