TY - GEN
T1 - A 250MHz Gm-C filter using negative current feedback OTAs
AU - Lo, Tien Yu
AU - Kuo, Chih Lung
AU - Hung, Chung-Chih
AU - Lo, Chi Hsiang
PY - 2009/12/1
Y1 - 2009/12/1
N2 - A CMOS fourth-order linear phase low-pass filter used for high speed wireless/wireline system is realized in 0.18-m CMOS process. The high speed filter is designed based on operational transconductance amplifier (OTA) biquad sections. As well known, large transconductance is required for high speed applications, and thu. The conventional source degeneration topology, which operates wit. The trade-off of linearity and transconductance, is not suitable. In this paper. The proposed OTA us. The negative current feedback topology to maintain linearity for high speed application. By usin. The proposed OTA as a building block, a 4-th order low-pass filter is realized. Fabricating in 0.18-m CMOS technology. The -3dB filter frequency response at 250MHz is measured. The measured HD3 performance is about -40dB an. The group delay variation is less than 5ns at the filter -3dB cutoff frequency.
AB - A CMOS fourth-order linear phase low-pass filter used for high speed wireless/wireline system is realized in 0.18-m CMOS process. The high speed filter is designed based on operational transconductance amplifier (OTA) biquad sections. As well known, large transconductance is required for high speed applications, and thu. The conventional source degeneration topology, which operates wit. The trade-off of linearity and transconductance, is not suitable. In this paper. The proposed OTA us. The negative current feedback topology to maintain linearity for high speed application. By usin. The proposed OTA as a building block, a 4-th order low-pass filter is realized. Fabricating in 0.18-m CMOS technology. The -3dB filter frequency response at 250MHz is measured. The measured HD3 performance is about -40dB an. The group delay variation is less than 5ns at the filter -3dB cutoff frequency.
UR - http://www.scopus.com/inward/record.url?scp=77951457271&partnerID=8YFLogxK
U2 - 10.1109/ICECS.2009.5410914
DO - 10.1109/ICECS.2009.5410914
M3 - Conference contribution
AN - SCOPUS:77951457271
SN - 9781424450916
T3 - 2009 16th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2009
SP - 367
EP - 370
BT - 2009 16th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2009
T2 - 2009 16th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2009
Y2 - 13 December 2009 through 16 December 2009
ER -