Conference Papers
Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506
Browse
Search Results
Item A 0.5 V, 20 μw pseudo differential 500 kHz Gm-C low pass filter in 0.18 μm CMOS technology(2012) Vasantha, M.H.; Laxminidhi, T.Scaling of supply voltage due to shrinking in the device sizes has lead to bulk driven circuit techniques specially for analog circuits that operate at low supply voltages. In this paper we present a bulk driven pseudo differential low power, continuous time Cochlea 2 nd order Butterworth low pass filter operating at a supply voltage of 0.5 V. The filter uses Gm-C technique in 0.18 μm n-well standard CMOS process and has a bandwidth of 500 kHz. Simulations results have shown that the filter offers a dynamic range of 48 dB while consuming a power of 20 μW. Simulated Figure of Merit (FOM) is found to be 0.52 fJ and is found to be the lowest among similar low voltage filters found in literature. The percentage change in transconductance is less than μ5% for temperature variation of 0-70°C at 0.5 V supply voltage and across five process corners. © 2012 IEEE.Item 0.5 V, 36μW Gm-C butterworth low pass filter in 0.18μm CMOS process(2012) Vasantha, M.H.; Laxminidhi, T.This paper presents a low voltage, low power continuous-time (G m-C) 4th order low pass Butterworth filter with a 3-dB bandwidth of 1MHz and capable of operating at supply voltage as low as 0.5V in 0.18 μm. The filter uses bulk-driven technique for achieving the necessary head-room. The simulation results show that the filter has a peak-to-peak signal swing of 1.2V (differential) for 1% THD and a dynamic range of 54 dB. The power consumed by the filter is 36μW when operating at a voltage of 0.5 V. The Figure of Merit (FOM) achieved by the filter is 0.05 fJ and is found to be lowest among the similar filters found in the literature. © 2012 IEEE.Item 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.