Title :
Large f0Q second order filters using multiple output OTAs
Author :
Ramirez-Angulo, Jaime ; Sánchez-Sinencio, Edgar ; Howe, Mathew
Author_Institution :
Dept. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM, USA
fDate :
9/1/1994 12:00:00 AM
Abstract :
It is shown and verified experimentally that a multiple output nonlinearized operational transconductance amplifier (OTA) can be efficiently used for the practical implementation of very high selectivity Q (Q>100), high frequency second-order filters (f0 >10 MHz) with programmable f0 and Q values in CMOS technology. Filter types presented are lowpass and bandpass. It is shown that with the proposed approach, filters with products f0Q close to the maximum allowed by the technology can be synthesized. Experimental results of 2 μm CMOS test-chip second-order filters with f0Q=2 GHz are presented
Keywords :
CMOS integrated circuits; Q-factor; active filters; band-pass filters; cascade networks; compensation; linear integrated circuits; low-pass filters; operational amplifiers; 2 GHz; 2 micron; CMOS technology; bandpass filters; high frequency filters; high selectivity Q; lowpass filters; multiple output OTAs; nonlinearized operational transconductance amplifier; second order filters; Band pass filters; CMOS technology; Circuits; Frequency; Low pass filters; Mirrors; Operational amplifiers; Parasitic capacitance; Testing; Transconductance;
Journal_Title :
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
