Design and development of current - mode hall sensor microarray with analog front - end and ADC integrated circuit
| dc.contributor | Graduate Program in Electrical and Electronic Engineering. | |
| dc.contributor.advisor | Dündar, Günhan, | |
| dc.contributor.author | Tunçtürk, Özcan. | |
| dc.date.accessioned | 2023-03-16T10:19:22Z | |
| dc.date.available | 2023-03-16T10:19:22Z | |
| dc.date.issued | 2018. | |
| dc.description.abstract | A study of current-mode cross-shaped Hall effect sensors with detailed analyses of each building block of Hall effect sensor microsystems including analog front-end com ponents, and readout circuitry is presented. These include 4-phase current spinning, chopper amplifier, switched capcitor low-pass filter, and single-slope analog-to-digital converters. Significant e↵ort is devoted to eliminate the o↵set and 1/f noise of current mode Hall sensors. In addition, current-to-voltage conversion using chopper amplifiers is also investigated. The noise magnitude around 1 kHz is reduced from 65 nv to 8 nv using the chopping technique. The optimum W/L ratio of a cross-shaped Hall sensor is found to be 2.55 which provides a sensitivity of 239 nA/T by biasing at 10 µA. A switched capacitor 5th order elliptic low-pass filter is designed to remove the unwanted noise components that appear at odd harmonics of the chopping frequency. A 10-bit single-slope ADC is designed to digitally represent the magnetic field data. The designs presented are made using UMC 180 nm CMOS technology. | |
| dc.format.extent | 30 cm. | |
| dc.format.pages | xix, 111 leaves ; | |
| dc.identifier.other | EE 2018 T76 | |
| dc.identifier.uri | https://digitalarchive.library.bogazici.edu.tr/handle/123456789/12924 | |
| dc.publisher | Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2018. | |
| dc.subject.lcsh | Analog electronic systems. | |
| dc.subject.lcsh | Hall effect devices. | |
| dc.title | Design and development of current - mode hall sensor microarray with analog front - end and ADC integrated circuit |
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