AC amplifiers with ultra‐low corner frequency by using bootstrapping
Abstract A novel architecture for an AC (i.e. high‐pass) amplifier is proposed allowing a drastic reduction of the cutoff frequency to the sub‐Hertz range. It builds upon the classic AC configuration with a high gain amplifier and a parallel RC circuit in the feedback loop, by increasing the feedbac...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-03-01
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| Series: | Electronics Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/ell2.12042 |
| _version_ | 1798003188783120384 |
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| author | Maite Martincorena‐Arraiza Alfonso Carlosena Carlos A. de laCruz‐Blas Antonio J. Lopez‐Martin |
| author_facet | Maite Martincorena‐Arraiza Alfonso Carlosena Carlos A. de laCruz‐Blas Antonio J. Lopez‐Martin |
| author_sort | Maite Martincorena‐Arraiza |
| collection | DOAJ |
| description | Abstract A novel architecture for an AC (i.e. high‐pass) amplifier is proposed allowing a drastic reduction of the cutoff frequency to the sub‐Hertz range. It builds upon the classic AC configuration with a high gain amplifier and a parallel RC circuit in the feedback loop, by increasing the feedback resistance through bootstrapping. Resistance multiplying factors higher than four orders of magnitude are easily achievable. The basic principle can be applied to several practical implementations, though in this letter it is demonstrate with measurement results of an op‐amp based discrete implementation. |
| first_indexed | 2024-04-11T12:04:03Z |
| format | Article |
| id | doaj.art-7452b92f637949a7bfb9bf2cde861e2e |
| institution | Directory Open Access Journal |
| issn | 0013-5194 1350-911X |
| language | English |
| last_indexed | 2024-04-11T12:04:03Z |
| publishDate | 2021-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Electronics Letters |
| spelling | doaj.art-7452b92f637949a7bfb9bf2cde861e2e2022-12-22T04:24:46ZengWileyElectronics Letters0013-51941350-911X2021-03-0157520320510.1049/ell2.12042AC amplifiers with ultra‐low corner frequency by using bootstrappingMaite Martincorena‐Arraiza0Alfonso Carlosena1Carlos A. de laCruz‐Blas2Antonio J. Lopez‐Martin3Department of Electrical Electronic and Communications Engineering, Institute of Smart Cities Public University of Navarra Pamplona SpainDepartment of Electrical Electronic and Communications Engineering, Institute of Smart Cities Public University of Navarra Pamplona SpainDepartment of Electrical Electronic and Communications Engineering, Institute of Smart Cities Public University of Navarra Pamplona SpainDepartment of Electrical Electronic and Communications Engineering, Institute of Smart Cities Public University of Navarra Pamplona SpainAbstract A novel architecture for an AC (i.e. high‐pass) amplifier is proposed allowing a drastic reduction of the cutoff frequency to the sub‐Hertz range. It builds upon the classic AC configuration with a high gain amplifier and a parallel RC circuit in the feedback loop, by increasing the feedback resistance through bootstrapping. Resistance multiplying factors higher than four orders of magnitude are easily achievable. The basic principle can be applied to several practical implementations, though in this letter it is demonstrate with measurement results of an op‐amp based discrete implementation.https://doi.org/10.1049/ell2.12042Amplifiers |
| spellingShingle | Maite Martincorena‐Arraiza Alfonso Carlosena Carlos A. de laCruz‐Blas Antonio J. Lopez‐Martin AC amplifiers with ultra‐low corner frequency by using bootstrapping Electronics Letters Amplifiers |
| title | AC amplifiers with ultra‐low corner frequency by using bootstrapping |
| title_full | AC amplifiers with ultra‐low corner frequency by using bootstrapping |
| title_fullStr | AC amplifiers with ultra‐low corner frequency by using bootstrapping |
| title_full_unstemmed | AC amplifiers with ultra‐low corner frequency by using bootstrapping |
| title_short | AC amplifiers with ultra‐low corner frequency by using bootstrapping |
| title_sort | ac amplifiers with ultra low corner frequency by using bootstrapping |
| topic | Amplifiers |
| url | https://doi.org/10.1049/ell2.12042 |
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