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Author: search.filters.author.Laxminidhi, T.Subject: search.filters.subject.Bulk-driven

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    0.5 V, low power, 1 MHz low pass filter in 0.18 μm CMOS process
    (2012) Vasantha, M.H.; Laxminidhi, T.
    In this paper a low power continuous-time 4th order low pass Butterworth filter operating at power supply of 0.5 V is presented. A 3-dB bandwidth of 1 MHz using technology node of 0.18 μm is achieved. In order to achievenecessary head-room, the filter uses pseudo-differential bulk-driven transconductor. A master-slave based common modefeedback(CMFB) circuit sets the output common mode voltageof transconductor. The simulation results show that the filter has a dynamic range of 54 dB and consumes a total power of 36 μW when operating at a supply voltage of 0.5 V. The Figure of Merit (FOM) achieved by the filter is 0.05 fJ, lowest among similar low-voltage filters found in the literature. The simulation result show that the 3-dB bandwidth variation for process, voltage and temperature is less than ±10%. © 2012 IEEE.
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    Common mode feedback circuits for low voltage fully-differential amplifiers
    (World Scientific Publishing Co. Pte Ltd wspc@wspc.com.sg, 2016) Rekha, S.; Laxminidhi, T.
    Continuous time common mode feedback (CMFB) circuits for low voltage, low power applications are proposed. Four circuits are proposed for gate/bulk-driven pseudo-differential transconductors operating on sub-1-V power supply. The circuits are validated for a bulk-driven pseudo-differential transconductor operating on 0.5V in 0.18?m standard CMOS technology. Simulation results reveal that the proposed CMFB circuits offer power efficient solution for setting the output common mode of the transconductors. They also load the transconductor capacitively offering capacitance of about 1fF to tens of femto farads. © 2016 World Scientific Publishing Company.