Title :
High selectivity, high frequency continuous-time filters using multiple output OTAs
Author :
Ramírez-Angulo, Jaime ; Sánchez-Sinencio, Edgar ; Howe, Matthew
Author_Institution :
Dept. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM, USA
Abstract :
The CMOS implementation of very high selectivity high-frequency filters using multiple output OTAs (operational transconductance amplifiers) has been proposed and experimentally verified. In this approach OTAs in closed loop configurations which do not require linearization are used. This structure can be very useful in cascade filter design where one or more of the biquadratic filters involve Q s higher than 50. Products f0Q close to the limits imposed by the technology can be realized using the proposed approach
Keywords :
CMOS integrated circuits; active filters; cascade networks; operational amplifiers; CMOS implementation; biquadratic filters; cascade filter design; closed loop configurations; continuous-time filters; multiple output OTAs; operational transconductance amplifiers; selectivity high-frequency filters; Band pass filters; CMOS technology; Frequency; MOSFET circuits; Mirrors; Operational amplifiers; Q factor; Silicon; Testing; Transconductance;
Conference_Titel :
Circuits and Systems, 1991., IEEE International Sympoisum on
Print_ISBN :
0-7803-0050-5
DOI :
10.1109/ISCAS.1991.176621
