Title :
A low-frequency, sub 1.5-V micropower Gm-C filter based on subthreshold MIFG MOS transistors
Author :
El Mourabit, Aimad ; Lu, Guo-Neng ; Pittet, Patrick
Author_Institution :
LENAC, Univ. Lyon 1, Villeurbanne, France
Abstract :
We present a sub-1.5V and micropower filter with very low and tunable cut off frequency. It consists of low-Gm and wide-linear-range OTA using subthreshold MIFG (multiple input floating gate) MOS transistors. A linearization technique based on cancellation of cubic distortion term is implemented. The filter designed in a 0.8-μm CMOS process can operate under a supply voltage Vdd as low as 1.2V. For Vdd = 1.5V, the filter has a linear range of 1.1 Vpp (with THD < 1%) and a tuning range from 0.5 to 200Hz, with power dissipation below 2μW.
Keywords :
CMOS integrated circuits; MOSFET; linearisation techniques; operational amplifiers; power filters; 0.5 to 200 Hz; 0.8 micron; CMOS process; MOS transistors; cubic distortion term; linearization technique; micropower filter; multiple input floating gate; operational transconductance filter; power dissipation; subthreshold MIFG; tunable cut off frequency; CMOS process; Capacitors; Cutoff frequency; Linearity; Linearization techniques; Low pass filters; MOSFETs; Power dissipation; Signal detection; Voltage;
Conference_Titel :
Solid-State Circuits Conference, 2005. ESSCIRC 2005. Proceedings of the 31st European
Print_ISBN :
0-7803-9205-1
DOI :
10.1109/ESSCIR.2005.1541627
