0.4-V bulk-driven differential-difference amplifier |
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| Affiliation: | 1. Department of Electrical Engineering, Technical University of Częstochowa, 42-201 Częstochowa, Poland;2. Department of Microelectronics, Brno University of Technology, Technická 10, Brno, Czech Republic;3. Czech Technical University in Prague, Faculty of Biomedical Engineering, nám. Sítná 3105, Kladno, Czech Republic;1. Department of Engineering Education, Faculty of Industrial Education and Technology, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand;2. SIX Research Center, Brno University of Technology, Brno, Czech Republic;3. Department of Microelectronics, Brno University of Technology, Technická 10, Brno, Czech Republic;4. Faculty of Biomedical Engineering, Czech Technical University in Prague, nám. Sítná 3105, Kladno, Czech Republic;1. School of Microelectronics, Xidian University, Xi''an, 710071, PR China;2. Key Laboratory of Wide Band-Gap Semiconductor Materials and Devices, Xi''an, 710071, PR China |
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| Abstract: | A new solution for an ultra-low-voltage, low-power, bulk-driven fully differential-difference amplifier (FDDA) is presented in the paper. Simulated performance of the overall FDDA for a 50 nm CMOS process and supply voltage of 0.4 V, shows dissipation power of 31.8 μW, the open loop voltage gain of 58.6 dB and the gain-bandwidth product (GBW) of 2.3 MHz for a 20 pF load capacitance. Despite the very low supply voltage, the FDDA exhibits rail-to-rail input/output swing. The circuit performance has also been tested in two applications; the differential voltage follower and the second-order band-pass filter, showing satisfactory accuracy and dynamic range. |
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| Keywords: | Bulk-driven MOSFETs CMOS analog integrated circuits Low-voltage circuits Differential-difference amplifiers |
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