0.5-V High-Order Universal Filter for Bio-Signal Processing Applications
Source abstract
Abstract
In this paper, a novel multiple-input operational transconductance amplifier (MI-OTA) is proposed. The MI-OTA can be obtained by using the multiple-input bulk-driven MOS transistor (MIBD MOST) technique. The circuit structure is simple, can operate with a supply voltage of 0.5 V, and consumes 937 pW at a current setting of 625 pA. The proposed MI-OTA was used to implement a high-order multiple-input voltage-mode universal filter. The proposed filter can provide non-inverting and inverting low-pass, high-pass, band-pass, band-stop, and all-pass transfer functions to the same topology. In addition, it has a high input impedance and does not need any inverted input signals, so there is no additional buffering circuit. The proposed filter can be used for biological signal processing. The proposed MI-OTA and the second-order universal filter were simulated in Cadence using CMOS process parameters of 0.18 μm from TSMC to verify the functionality and performance of the new structures.
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Research context
OpenAlex topics: Photonic and Optical Devices · Neuroscience and Neural Engineering · Analog and Mixed-Signal Circuit Design
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Telecommunications Engineering, School of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand
Department of Microelectronics, Brno University of Technology, Technická 10, 601 90 Brno, Czech Republic
Department of Electrical Engineering, Brno University of Defence, Kounicova 65, 662 10 Brno, Czech Republic
Department of Electrical Engineering, Czestochowa University of Technology, 42-201 Czestochowa, Poland
Funding
University of Defence within the Organization Development Project VAROPS
References (44)
Show source-provided references
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