0.3-V 36-nW Voltage-Mode First-Order Filter Based on Multiple-Input Operational Transconductance Amplifier
This paper presents an electronically tunable, voltage-mode first-order filter based on multiple-input operational transconductance amplifiers (MI-OTAs). The filter circuit consists of two MI-OTAs and a single capacitor. It is demonstrated that a single topology can realize first-order low-pass, hig...
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IEEE
2025-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/11036094/ |
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| author | Montree Kumngern Tomasz Kulej Fabian Khateb |
| author_facet | Montree Kumngern Tomasz Kulej Fabian Khateb |
| author_sort | Montree Kumngern |
| collection | DOAJ |
| description | This paper presents an electronically tunable, voltage-mode first-order filter based on multiple-input operational transconductance amplifiers (MI-OTAs). The filter circuit consists of two MI-OTAs and a single capacitor. It is demonstrated that a single topology can realize first-order low-pass, high-pass, and all-pass filters using MI-OTA-based designs. These filter responses are achieved without the need for component matching, input matching, or inverting input signals. The pole frequency of all filter responses can be electronically tuned by adjusting the transconductance of the OTA. The MI-OTA operates at 0.3 V with a rail-to-rail input voltage range, thanks to the use of bulk-driven MOS transistors operating in the subthreshold region and the multiple-input MOS transistor technique. This results in a simple CMOS structure with low supply voltage and reduced power consumption. The circuit was designed and evaluated in Cadence Virtuoso using UMC’s 130-nm 1P8M CMOS process. The proposed filter demonstrates improved performance in terms of lower supply voltage and reduced power consumption compared to previous works. It achieves a dynamic range of 52 dB while consuming only 36 nW of power, with a bias current setting of 10 nA. |
| format | Article |
| id | doaj-art-bfe6e4fd47a140638ab6be55d90aafea |
| institution | DOAJ |
| issn | 2169-3536 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj-art-bfe6e4fd47a140638ab6be55d90aafea2025-08-20T03:16:18ZengIEEEIEEE Access2169-35362025-01-011310491610492510.1109/ACCESS.2025.3579494110360940.3-V 36-nW Voltage-Mode First-Order Filter Based on Multiple-Input Operational Transconductance AmplifierMontree Kumngern0https://orcid.org/0000-0002-1960-9081Tomasz Kulej1https://orcid.org/0000-0002-6315-9292Fabian Khateb2https://orcid.org/0000-0002-9864-9830Department of Telecommunications Engineering, School of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, ThailandDepartment of Electrical Engineering, Częstochowa University of Technology, Częstochowa, PolandDepartment of Microelectronics, Brno University of Technology, Brno, Czech RepublicThis paper presents an electronically tunable, voltage-mode first-order filter based on multiple-input operational transconductance amplifiers (MI-OTAs). The filter circuit consists of two MI-OTAs and a single capacitor. It is demonstrated that a single topology can realize first-order low-pass, high-pass, and all-pass filters using MI-OTA-based designs. These filter responses are achieved without the need for component matching, input matching, or inverting input signals. The pole frequency of all filter responses can be electronically tuned by adjusting the transconductance of the OTA. The MI-OTA operates at 0.3 V with a rail-to-rail input voltage range, thanks to the use of bulk-driven MOS transistors operating in the subthreshold region and the multiple-input MOS transistor technique. This results in a simple CMOS structure with low supply voltage and reduced power consumption. The circuit was designed and evaluated in Cadence Virtuoso using UMC’s 130-nm 1P8M CMOS process. The proposed filter demonstrates improved performance in terms of lower supply voltage and reduced power consumption compared to previous works. It achieves a dynamic range of 52 dB while consuming only 36 nW of power, with a bias current setting of 10 nA.https://ieeexplore.ieee.org/document/11036094/First-order filteroperational transconductance amplifiermultiple-input MOS transistorbulk-driven MOS transistor |
| spellingShingle | Montree Kumngern Tomasz Kulej Fabian Khateb 0.3-V 36-nW Voltage-Mode First-Order Filter Based on Multiple-Input Operational Transconductance Amplifier IEEE Access First-order filter operational transconductance amplifier multiple-input MOS transistor bulk-driven MOS transistor |
| title | 0.3-V 36-nW Voltage-Mode First-Order Filter Based on Multiple-Input Operational Transconductance Amplifier |
| title_full | 0.3-V 36-nW Voltage-Mode First-Order Filter Based on Multiple-Input Operational Transconductance Amplifier |
| title_fullStr | 0.3-V 36-nW Voltage-Mode First-Order Filter Based on Multiple-Input Operational Transconductance Amplifier |
| title_full_unstemmed | 0.3-V 36-nW Voltage-Mode First-Order Filter Based on Multiple-Input Operational Transconductance Amplifier |
| title_short | 0.3-V 36-nW Voltage-Mode First-Order Filter Based on Multiple-Input Operational Transconductance Amplifier |
| title_sort | 0 3 v 36 nw voltage mode first order filter based on multiple input operational transconductance amplifier |
| topic | First-order filter operational transconductance amplifier multiple-input MOS transistor bulk-driven MOS transistor |
| url | https://ieeexplore.ieee.org/document/11036094/ |
| work_keys_str_mv | AT montreekumngern 03v36nwvoltagemodefirstorderfilterbasedonmultipleinputoperationaltransconductanceamplifier AT tomaszkulej 03v36nwvoltagemodefirstorderfilterbasedonmultipleinputoperationaltransconductanceamplifier AT fabiankhateb 03v36nwvoltagemodefirstorderfilterbasedonmultipleinputoperationaltransconductanceamplifier |