Szczegóły publikacji
Opis bibliograficzny
Sensitivity and 3 dB bandwidth in single and series-connected tunneling magnetoresistive sensors / Michał DĄBEK, Piotr WIŚNIOWSKI, Tomasz STOBIECKI, Jerzy Wrona, Susana Cardoso, Paulo P. Freitas // Sensors [Dokument elektroniczny]. — Czasopismo elektroniczne ; ISSN 1424-8220. — 2016 — vol. 16 iss. 11, s. 1821-1–1821-7. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 1821-6–1821-7, Abstr. — Publikacja dostępna online od: 2016-10-31. — M. Dąbek – dod. afilicja: Silicon Creations, USA
Autorzy (6)
- AGHDąbek Michał
- AGHWiśniowski Piotr
- AGHStobiecki Tomasz
- Wrona Jerzy
- Cardoso Susana
- Freitas Paulo P.
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 102292 |
|---|---|
| Data dodania do BaDAP | 2016-11-25 |
| Tekst źródłowy | URL |
| Rok publikacji | 2016 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Sensors |
Abstract
As single tunneling magnetoresistive (TMR) sensor performance in modern high-speed applications is limited by breakdown voltage and saturation of the sensitivity, for higher voltage applications (i.e., compatible to 1.8 V, 3.3 V or 5 V standards) practically only a series connection can be applied. Thus, in this study we focused on sensitivity, 3 dB bandwidth and sensitivity-bandwidth product (SBP) dependence on the DC bias voltage in single and series-connected TMR sensors. We show that, below breakdown voltage, the strong bias influence on sensitivity and the 3 dB frequency of a single sensor results in higher SBP than in a series connection. However, the sensitivity saturation limits the single sensor SBP which, under 1 V, reaches the same level of 2000 MHz∙V/T as in a series connection. Above the single sensor breakdown voltage, linear sensitivity dependence on the bias and the constant 3 dB bandwidth of the series connection enable increasing its SBP up to nearly 10,000 MHz∙V/T under 5 V. Thus, although by tuning bias voltage it is possible to control the sensitivity-bandwidth product, the choice between the single TMR sensor and the series connection is crucial for the optimal performance in the high frequency range.
