Title :
A linear CMOS Gm-C-OTA biquad filter with 10-100 MHz tuning
Author :
Calvo, B. ; Celma, S. ; Sanz, M.T.
Author_Institution :
Group of Electron. Design, Zaragoza Univ., Spain
Abstract :
This paper presents a broad-band low-pass biquad section based on a high-linear wide-tunable transconductance cell and a wide-band operational transconductance amplifier-based active integrator. It is implemented in a 0.35 μm CMOS process and consumes 9.44 mW from a 3.3 V supply. The bandwidth is tunable from 10 to 100 MHz with 60 dB of dynamic range over all the frequency range while the gain and quality factor can be independently adjusted. This bandwidth can be extended from 1 to 100 MHz by switching the integrating capacitors.
Keywords :
CMOS integrated circuits; Q-factor; VHF filters; biquadratic filters; capacitors; continuous time filters; low-pass filters; operational amplifiers; programmable filters; 0.35 micron; 1 to 100 MHz; 3.3 V; 60 dB; 9.44 mW; CMOS process; active integrator; broadband low pass biquad filter; continuous time programmable filters; integrating capacitors; linear CMOS Gm-C-OTA biquad filter; quality factor; wide tunable transconductance cell; wideband operational transconductance amplifier; Boosting; Feedback circuits; Feedback loop; MOSFETs; Nonlinear filters; Operational amplifiers; Resistors; Transconductance; Transconductors; Voltage;
Conference_Titel :
Circuits and Systems, 2004. MWSCAS '04. The 2004 47th Midwest Symposium on
Print_ISBN :
0-7803-8346-X
DOI :
10.1109/MWSCAS.2004.1353897
