Title :
A universal low-field magnetic field sensor using GMR resistors on a semicustom BiCMOS array
Author_Institution :
Nonvolatile Electron. Inc., Eden Prairie, MN, USA
Abstract :
This paper presents the first commercially available IC that integrates Giant Magnetoresistive Ratio (GMR) materials with semiconductor devices. This marriage results in a highly sensitive, inexpensive, low power, and temperature stable magnetic field sensor. The chip uses a BiCMOS 1.5 μ process and a masterslice design approach that allows rapid prototyping of many custom configurations in a 35 mil by 95 mil size. Sensing of a wide range of magnetic fields (0-500 Gauss) is possible, with digital and linear outputs available. Temperature range of operation is -55C to +150C, making the chip ideal for many automotive, industrial, and military applications
Keywords :
BiCMOS integrated circuits; application specific integrated circuits; giant magnetoresistance; magnetic sensors; magnetoresistive devices; -55 to 150 degC; 0 to 500 gauss; 1.5 micron; 35 mil; 95 mil; GMR resistors; custom configurations; digital outputs; linear outputs; low-field magnetic field sensor; masterslice design approach; rapid prototyping; semicustom BiCMOS array; BiCMOS integrated circuits; Giant magnetoresistance; Magnetic fields; Magnetic materials; Magnetic sensors; Prototypes; Resistors; Semiconductor devices; Semiconductor materials; Temperature sensors;
Conference_Titel :
Circuits and Systems, 1996., IEEE 39th Midwest symposium on
Conference_Location :
Ames, IA
Print_ISBN :
0-7803-3636-4
DOI :
10.1109/MWSCAS.1996.594053
