Title :
A novel OTA-based voltage attenuation technique for very low frequency filtering using low-Gm OTA filters
Author_Institution :
Dept. of Electron. Eng., King Mongkut´s Inst. of Technol., Bangkok, Thailand
Abstract :
This paper describes a novel OTA-based voltage attenuation technique for a very low Gm transconductor. An analysis of a noise spectrum of the proposed transconductor was given. The proposed transconductor can achieve very low Gm values (pA/V). The first order lowpass filter constructed from the proposed OTA is tunable from 0.2-29Hz with dynamic range, input referred noise, power consumption, and supply voltage of 70-73dB, 124-152μVrms and 112-190nW, and 2.5V, respectively.
Keywords :
CMOS analogue integrated circuits; low-pass filters; operational amplifiers; OTA-based voltage attenuation technique; first order lowpass filter; frequency 0.2 Hz to 29 Hz; input referred noise; low power analog integrated circuits; low-Gm OTA filters; noise spectrum analysis; power 112 nW to 190 nW; power consumption; signal processing; supply voltage; transconductor; very low frequency filtering; voltage 2.5 V; Attenuation; Attenuators; Cutoff frequency; Noise; Power demand; Transconductance; Tuning; Analog filter; Low frequency; Low transconductance; Voltage attenuator;
Conference_Titel :
Intelligent Signal Processing and Communications Systems (ISPACS), 2013 International Symposium on
Conference_Location :
Naha
Print_ISBN :
978-1-4673-6360-0
DOI :
10.1109/ISPACS.2013.6704635
