We here present a 0.15 μm CMOS high input impedance and low noise AC coupled flipped voltage follower‐based amplifier for high integration level in integrated circuits in a wide range of sensing applications. With such a circuit, it is possible to achieve a high level of integration, thanks to the absence of passive resistors, and also to implement a very high input impedance without capacitive feedback thanks to bootstrap operation, thus offering a very low high‐pass cutoff frequency. Simulated results with a proven and well modeled standard technology show a whole circuit input‐referred noise of 5.4 μVrms. The bias voltage is ±0.6 V with a total power consumption of the single amplifier of 20 μW. The very low circuit complexity allows a very low estimated reduced area occupation giving, as a general example, the possibility of integrating an array of up to thousands of channels for biomedical applications. Detailed simulation results, PVT analysis and comparison tables are also presented in the paper.

A novel general purpose combined DFVF/VCII based biomedical amplifier

Stornelli V.;Barile G.;Leoni A.
2020

Abstract

We here present a 0.15 μm CMOS high input impedance and low noise AC coupled flipped voltage follower‐based amplifier for high integration level in integrated circuits in a wide range of sensing applications. With such a circuit, it is possible to achieve a high level of integration, thanks to the absence of passive resistors, and also to implement a very high input impedance without capacitive feedback thanks to bootstrap operation, thus offering a very low high‐pass cutoff frequency. Simulated results with a proven and well modeled standard technology show a whole circuit input‐referred noise of 5.4 μVrms. The bias voltage is ±0.6 V with a total power consumption of the single amplifier of 20 μW. The very low circuit complexity allows a very low estimated reduced area occupation giving, as a general example, the possibility of integrating an array of up to thousands of channels for biomedical applications. Detailed simulation results, PVT analysis and comparison tables are also presented in the paper.
File in questo prodotto:
File Dimensione Formato  
electronics-09-00331-v2.pdf

accesso aperto

Tipologia: Documento in Versione Editoriale
Licenza: Creative commons
Dimensione 3.83 MB
Formato Adobe PDF
3.83 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11697/166328
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 3
  • ???jsp.display-item.citation.isi??? 3
social impact