A new ultra low-power,universal OTA-C filter in subthreshold region using bulk-drive technique |
| |
| Affiliation: | 1. Department of Electrical and Electronics Engineering, Marmara University, Göztepe, Istanbul 34722, Turkey;2. Department of Management Information Systems, Bogazici University, Bebek, Istanbul 34342, Turkey;3. Department of Electrical and Electronics Engineering, Bogazici University, Bebek, Istanbul 34342, Turkey;1. Department of Engineering Education, Faculty of Industrial Education, King Mongkut’s Institute of Technology Ladkrabang, Thailand;2. Department of Microelectronics, Brno University of Technology, Technická 10, Brno, Czech Republic;3. Faculty of Biomedical Engineering, Czech Technical University in Prague, nám. Sítná 3105, Kladno, Czech Republic;1. Electrical and Computer Engineering Department, University of Sharjah, United Arab Emirates;2. Electrical Engineering Department, Fayoum University, Egypt;1. Department of Naval Architecture and Marine Engineering, Bandirma Onyedi Eylul University, Balikesir 10200, Turkey;2. Department of Electrical and Electronics Engineering, Marmara University, Istanbul 34722, Turkey;3. Department of Electronics and Communication Engineering, Istanbul Technical University, Istanbul 34469, Turkey |
| |
| Abstract: | In this paper, a new ultra low-power universal OTA-C filter which can properly operate in all modes of operation (voltage, current, trans-resistance and trans-conductance) is presented. However, in order to reduce the power consumption effectively, the proposed circuit uses subthreshold transistors which are biased at Ia = 50 nA, Ib = 150 nA. Furthermore, using the bulk-drive technique leads to a reduced power consumption as well as the supply voltage of ±0.3 V. Moreover, the grounded capacitors are used to effectively reduce the parasitic effects. However, the result of sensitivity analysis shows that the proposed circuit has a very low sensitivity to the values of active and passive circuit elements such as: trans-conductance (gm) and capacitance (C) values. Furthermore, the proposed circuit uses the minimum number of active elements to effectively reduce the power consumption as well as the chip area. Finally, the proposed filter is designed and simulated in HSPICE using 0.18µm CMOS technology parameters, while HSPICE simulation results have very close agreement with theoretical results obtained from MATLAB, which justifies the design accuracy and low-power performance of the proposed universal filter. |
| |
| Keywords: | Universal filter OTA-C Subthreshold Bulk-drive Low-power |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
