Title :
Highly stable MI micro sensor using CMOS IC multivibrator with synchronous rectification [for automobile control application]
Author :
Kawajiri, N. ; Nakabayashi, M. ; Cai, C.M. ; Mohri, K. ; Uchiyama, Tsuyoshi
Author_Institution :
Dept. of Electr. Eng., Nagoya Univ., Japan
fDate :
9/1/1999 12:00:00 AM
Abstract :
A new highly stable magneto-impedance (MI) micro magnetic sensor with a pair of zero-magnetostrictive amorphous wires is presented. The sensor picks up a first pulse in an induced oscillatory pulse voltage at a wire coil using an analog switch. High temperature stability in the MI sensor is established in which zero drift for temperature variation from 20°C to 80°C is 0.6%/FS (0.01.%/FS°C). The highly stable MI sensor will be useful for application to automobile controls
Keywords :
CMOS analogue integrated circuits; automotive electronics; coils; magnetic sensors; magnetoresistive devices; microsensors; multivibrators; rectification; thermal stability; 20 to 80 C; CMOS IC multivibrator; automobile controls; high temperature stability; highly stable microsensor; induced oscillatory pulse voltage; intelligent transport systems; magneto-impedance micro magnetic sensor; switch; synchronous rectification; temperature variation; wire coil; zero drift; zero-magnetostrictive amorphous wires; Amorphous magnetic materials; Amorphous materials; CMOS integrated circuits; Coils; Magnetic sensors; Stability; Switches; Temperature sensors; Voltage-controlled oscillators; Wires;
Journal_Title :
Magnetics, IEEE Transactions on
