Title :
A CMOS Single-Chip Electronic Compass with Microcontroller
Author :
Schott, Christian ; Racz, Robert ; Huber, Samuel ; Manco, Angelo ; Gloor, Markus ; Simonne, Nicolas
Author_Institution :
Melexis, Bevaix
Abstract :
A CMOS single-chip electronic compass with a 16b DSP for heading calculation is presented. A Hall-based 3-axis magnetic-field sensor and analog amplifiers, with a gain of up to 20,000, drive a 12b ADC. A 0.35mum low-voltage CMOS process is used with an added metal layer working as a magnetic-field concentrator with a gain of about 6 to 10. The chip works with a 2.2 to 3.6V supply and draws 5mA in normal mode. The heading resolution is better than 0.5deg and the accuracy is better than plusmn2deg
Keywords :
CMOS integrated circuits; compasses; digital signal processing chips; electric sensing devices; magnetic field measurement; magnetic sensors; microcontrollers; 0.35 micron; 12 bit; 16 bit; 2.2 to 3.6 V; 5 mA; ADC; CMOS process; CMOS single-chip electronic compass; DSP; Hall-based magnetic-field sensor; analog amplifiers; magnetic-field concentrator; metal layer; microcontroller; CMOS technology; Coils; Magnetic field measurement; Magnetic fields; Magnetic sensors; Microcontrollers; Packaging; Temperature sensors; Transducers; Voltage;
Conference_Titel :
Solid-State Circuits Conference, 2007. ISSCC 2007. Digest of Technical Papers. IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
1-4244-0853-9
Electronic_ISBN :
0193-6530
DOI :
10.1109/ISSCC.2007.373454
