In this paper, we propose a low noise CMOS frontend for a Point-of-Care (PoC) biosensing platform based on tunnel magnetoresistance (TMR) as sensors. The integration of a low noise and low power integrated circuit (IC) with the TMR sensors reduces power consumption compared to a realization with discrete electronics, and thereby paves the way towards a portable diagnostic system. The FDDA features a gain of around 60 dB with a suitable offset calibration scheme to deal with the large DC offsets caused by TMR and/or magnetic field variations. The ability to deal with changing DC fields is crucial for a portable setup that is intended to be used in unshielded environments outside the lab. The offset cancellation is achieved by two on-chip current steering DACs that can accommodate TMR resistances between 535Ω and 4.7 kΩ.
%0 Conference Paper
%1 mohamed2020noise
%A Mohamed, A.
%A Schmid, M.
%A Tanwear, A.
%A Heidari, H.
%A Anders, J.
%B 2020 IEEE SENSORS Conference
%D 2020
%K myown iis from:aymanmohamed
%R 10.1109/SENSORS47125.2020.9278826
%T A Low Noise CMOS Sensor Frontend for a TMR-based Biosensing Platform
%U https://ieeexplore.ieee.org/document/9278826
%X In this paper, we propose a low noise CMOS frontend for a Point-of-Care (PoC) biosensing platform based on tunnel magnetoresistance (TMR) as sensors. The integration of a low noise and low power integrated circuit (IC) with the TMR sensors reduces power consumption compared to a realization with discrete electronics, and thereby paves the way towards a portable diagnostic system. The FDDA features a gain of around 60 dB with a suitable offset calibration scheme to deal with the large DC offsets caused by TMR and/or magnetic field variations. The ability to deal with changing DC fields is crucial for a portable setup that is intended to be used in unshielded environments outside the lab. The offset cancellation is achieved by two on-chip current steering DACs that can accommodate TMR resistances between 535Ω and 4.7 kΩ.
@inproceedings{mohamed2020noise,
abstract = {In this paper, we propose a low noise CMOS frontend for a Point-of-Care (PoC) biosensing platform based on tunnel magnetoresistance (TMR) as sensors. The integration of a low noise and low power integrated circuit (IC) with the TMR sensors reduces power consumption compared to a realization with discrete electronics, and thereby paves the way towards a portable diagnostic system. The FDDA features a gain of around 60 dB with a suitable offset calibration scheme to deal with the large DC offsets caused by TMR and/or magnetic field variations. The ability to deal with changing DC fields is crucial for a portable setup that is intended to be used in unshielded environments outside the lab. The offset cancellation is achieved by two on-chip current steering DACs that can accommodate TMR resistances between 535Ω and 4.7 kΩ.
},
added-at = {2021-01-18T20:05:51.000+0100},
author = {{Mohamed}, A. and {Schmid}, M. and {Tanwear}, A. and {Heidari}, H. and {Anders}, J.},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2c90adf59c6de401c41c5031a986b8e06/iis},
booktitle = {2020 IEEE SENSORS Conference},
doi = {10.1109/SENSORS47125.2020.9278826},
interhash = {3d5e7ea77a205ccee71d199c19b7d2f5},
intrahash = {c90adf59c6de401c41c5031a986b8e06},
issn = {2168-9229},
keywords = {myown iis from:aymanmohamed},
month = oct,
timestamp = {2021-01-18T19:05:51.000+0100},
title = {A Low Noise CMOS Sensor Frontend for a TMR-based Biosensing Platform},
url = {https://ieeexplore.ieee.org/document/9278826},
year = 2020
}
