A method to design high SNR nanoscale magnetic sensors using an array of tunnelling magneto-resistance (TMR) devices

P. Gomez; D. Litvinov; S. Khizroev

doi:10.1088/0022-3727/40/15/002

A method to design high SNR nanoscale magnetic sensors using an array of tunnelling magneto-resistance (TMR) devices

P. Gomez, D. Litvinov, S. Khizroev

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

This paper presents a systematic method to design and calculate tunnelling magneto-resistance (TMR) sensors with high signal-to-noise ratio (SNR). The sensing module consists of four TMR devices arranged in a Wheatstone-bridge configuration. Closed-form equations were obtained to calculate TMR sensor current, array output voltage, magneto-resistance ratio, overall noise (thermal and shot) and SNR for a given bandwidth. Using this technique we were able to maximize the SNR by tuning the many parameters of the TMR devices. Typical SNR values are in excess of 45 dB.

Original language	English (US)
Article number	002
Pages (from-to)	4396-4404
Number of pages	9
Journal	Journal of Physics D: Applied Physics
Volume	40
Issue number	15
DOIs	https://doi.org/10.1088/0022-3727/40/15/002
State	Published - Aug 8 2007
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Acoustics and Ultrasonics
Surfaces, Coatings and Films

Access to Document

10.1088/0022-3727/40/15/002

Cite this

@article{cfdc087b2c954751ae94294f2aae0a98,

title = "A method to design high SNR nanoscale magnetic sensors using an array of tunnelling magneto-resistance (TMR) devices",

abstract = "This paper presents a systematic method to design and calculate tunnelling magneto-resistance (TMR) sensors with high signal-to-noise ratio (SNR). The sensing module consists of four TMR devices arranged in a Wheatstone-bridge configuration. Closed-form equations were obtained to calculate TMR sensor current, array output voltage, magneto-resistance ratio, overall noise (thermal and shot) and SNR for a given bandwidth. Using this technique we were able to maximize the SNR by tuning the many parameters of the TMR devices. Typical SNR values are in excess of 45 dB.",

author = "P. Gomez and D. Litvinov and S. Khizroev",

year = "2007",

month = aug,

day = "8",

doi = "10.1088/0022-3727/40/15/002",

language = "English (US)",

volume = "40",

pages = "4396--4404",

journal = "Journal Physics D: Applied Physics",

issn = "0022-3727",

publisher = "IOP Publishing Ltd.",

number = "15",

}

TY - JOUR

T1 - A method to design high SNR nanoscale magnetic sensors using an array of tunnelling magneto-resistance (TMR) devices

AU - Gomez, P.

AU - Litvinov, D.

AU - Khizroev, S.

PY - 2007/8/8

Y1 - 2007/8/8

N2 - This paper presents a systematic method to design and calculate tunnelling magneto-resistance (TMR) sensors with high signal-to-noise ratio (SNR). The sensing module consists of four TMR devices arranged in a Wheatstone-bridge configuration. Closed-form equations were obtained to calculate TMR sensor current, array output voltage, magneto-resistance ratio, overall noise (thermal and shot) and SNR for a given bandwidth. Using this technique we were able to maximize the SNR by tuning the many parameters of the TMR devices. Typical SNR values are in excess of 45 dB.

AB - This paper presents a systematic method to design and calculate tunnelling magneto-resistance (TMR) sensors with high signal-to-noise ratio (SNR). The sensing module consists of four TMR devices arranged in a Wheatstone-bridge configuration. Closed-form equations were obtained to calculate TMR sensor current, array output voltage, magneto-resistance ratio, overall noise (thermal and shot) and SNR for a given bandwidth. Using this technique we were able to maximize the SNR by tuning the many parameters of the TMR devices. Typical SNR values are in excess of 45 dB.

UR - http://www.scopus.com/inward/record.url?scp=34547406691&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34547406691&partnerID=8YFLogxK

U2 - 10.1088/0022-3727/40/15/002

DO - 10.1088/0022-3727/40/15/002

M3 - Article

AN - SCOPUS:34547406691

VL - 40

SP - 4396

EP - 4404

JO - Journal Physics D: Applied Physics

JF - Journal Physics D: Applied Physics

SN - 0022-3727

IS - 15

M1 - 002

ER -

A method to design high SNR nanoscale magnetic sensors using an array of tunnelling magneto-resistance (TMR) devices

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this