CMOS Magnetic Sensors for Wearable Magnetomyography
- Resource Type
- Conference
- Authors
- Heidari, Hadi; Zuo, Siming; Krasoulis, Agamemnon; Nazarpour, Kianoush
- Source
- 2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) IEEE Engineering in Medicine and Biology Society (EMBC), 2018 40th Annual International Conference of the. :2116-2119 Jul, 2018
- Subject
- Bioengineering
Magnetic fields
Muscles
Sensitivity
Electromyography
Magnetic recording
Magnetic field measurement
Prosthetics
- Language
- ISSN
- 1558-4615
Magnetomyography utilizes magnetic sensors to record small magnetic fields produced by the electrical activity of muscles, which also gives rise to the electromyogram (EMG) signal typically recorded with surface electrodes. Detection and recording of these small fields requires sensitive magnetic sensors possibly equipped with a CMOS readout system. This paper presents a highly sensitive Hall sensor fabricated in a standard $0.18~\mu \mathrm {m}$ CMOS technology for future low-field MMG applications. Compared with previous works, our experimental results show that the proposed Hall sensor achieves a higher current mode sensitivity of approximately 2400 V/A/mT. Further refinement is required to enable measurement of MMG signals from muscles.