Title :
Floating-gate based tunable CMOS low-voltage linear transconductor and its application to HF gm-C filter design
Author :
Muñoz, F. ; Torralba, A. ; Carvajal, R.G. ; Tombs, J. ; Ramírez-Angulo, J.
Author_Institution :
Dept. de Ingenieria Electron., Seville Univ., Spain
Abstract :
This paper presents a new CMOS low-voltage linear transconductor for Very High Frequency (VHF). It uses multiple-input floating-gate transistors (MIFGTs) in each inverter that forms the differential transconductor presented by Nauta (1992). The proposed transconductor operates under constant low-voltage supply as low as 1.2 V and its transconductance and output resistance are independently tunable. It is suitable for use in HF continuous time filters with programmable center frequency and quality factor. To this end, simulation results of a 10.7 MHz and Q=40 gm-C filter operating with a voltage supply of 1.4 V and with rail-to-rail input swing are presented
Keywords :
CMOS analogue integrated circuits; Q-factor; VHF filters; active networks; circuit tuning; continuous time filters; integrated circuit design; linear network synthesis; low-power electronics; radiofrequency filters; 1.2 to 1.4 V; 10.7 MHz; CMOS linear transconductor; HF continuous time filters; HF gm-C filter design; constant LV supply; differential transconductor; floating-gate based transconductor; low-voltage operation; multiple-input floating-gate transistors; programmable center frequency; programmable quality factor; rail-to-rail input swing; tunable CMOS LV transconductor; tunable output resistance; tunable transconductance; Filters; Hafnium; Inverters; Low voltage; Nonvolatile memory; Power supplies; Threshold voltage; Transconductance; Transconductors; Tunable circuits and devices;
Conference_Titel :
Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on
Conference_Location :
Geneva
Print_ISBN :
0-7803-5482-6
DOI :
10.1109/ISCAS.2000.858789
