A novel OTA-based voltage attenuation technique for very low frequency filtering using low-Gm OTA filters

Author

Kongpoon, Metha

Author_Institution

Dept. of Electron. Eng., King Mongkut´s Inst. of Technol., Bangkok, Thailand

fYear

2013

fDate

12-15 Nov. 2013

Firstpage

680

Lastpage

683

Abstract

This paper describes a novel OTA-based voltage attenuation technique for a very low G_m transconductor. An analysis of a noise spectrum of the proposed transconductor was given. The proposed transconductor can achieve very low G_m 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, 124-152μV_rms 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-G_m 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;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Signal Processing and Communications Systems (ISPACS), 2013 International Symposium on

Conference_Location

Naha

Print_ISBN

978-1-4673-6360-0

Type

conf

DOI

10.1109/ISPACS.2013.6704635

Filename

6704635