Vertical hall effect-device

A system comprising at least two vertical Hall effect devices, wherein each of the two vertical Hall effect devices comprise:

• a Hall effect layer comprising at least a first Hall effect region, a second Hall effect region, a third Hall effect region and a fourth Hall effect region, which are at least partly decoupled from each other;
• wherein the Hall effect layer has a first face and a second opposite face;
• wherein the vertical Hall effect device has a terminal composition comprising a first terminal, a second terminal, a third terminal and a fourth terminal;
• wherein a low ohmic connecting composition at the first face connects the terminal composition with contacts of the Hall effect regions in such a way that at each Hall effect region the terminal composition is connected to a same first number of at least two contacts being connected to the respective Hall effect region at the first face;
• wherein the second terminal and the third terminal output an electrical signal responsive to a magnetic field, if an electrical energy is supplied to the first terminal and to the fourth terminal and wherein the first terminal and the fourth terminal output the electrical signal responsive to the magnetic field, if an electric energy is supplied to the second terminal and to the third terminal;
• and
• wherein a low ohmic layer composition having one or more layer portions;
• is arranged closer to the second face than to the first face, wherein the low ohmic layer composition connects each of the at least four Hall effect regions to at least one other of the at least four Hall effect regions, and
• wherein the two vertical Hall effect devices are connected in series so that at least 75% of a supply current flowing through a first vertical Hall effect device of the two vertical Hall effect devices is flowing through a second Hall effect device of the two vertical Hall effect devices.