Design and simulation of a tunable frequency OTA -C Chebyshev filter

A new transconductor operational amplifier(OTA) using active resistor of source degeneration was presented.The method was developed through acting differential pair degenerated by two MOSFET operating in the triode region as active resistor in its input stage,the circuit was designed in working in s...

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Main Authors: JIANG Jin-guang, WANG Yao-nan
Format: Article
Language:zho
Published: Editorial Department of Journal on Communications 2006-01-01
Series:Tongxin xuebao
Subjects:
Online Access:http://www.joconline.com.cn/zh/article/74661255/
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author JIANG Jin-guang
WANG Yao-nan
author_facet JIANG Jin-guang
WANG Yao-nan
author_sort JIANG Jin-guang
collection DOAJ
description A new transconductor operational amplifier(OTA) using active resistor of source degeneration was presented.The method was developed through acting differential pair degenerated by two MOSFET operating in the triode region as active resistor in its input stage,the circuit was designed in working in stable quiescent operating point with folded cas-cade output stage using voltage common-mode feedback(CMFB) circuit.As an tunable cutoff frequency fourth order Chebyshev lowpass filter,an accurately tunable Gm of OTA was used,which employed switching capacitor technique to tune Gm value.Simulated results show that the practical frequency response of the filter is very near to that of idealized prototype by applying 2-poly 4-metal 3.3V power supply 0.35μm CMOS technology spice model.
format Article
id doaj-art-a49ede1727d242148957d0fb625bc42e
institution Kabale University
issn 1000-436X
language zho
publishDate 2006-01-01
publisher Editorial Department of Journal on Communications
record_format Article
series Tongxin xuebao
spelling doaj-art-a49ede1727d242148957d0fb625bc42e2025-01-14T08:39:02ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2006-01-01818674661255Design and simulation of a tunable frequency OTA -C Chebyshev filterJIANG Jin-guangWANG Yao-nanA new transconductor operational amplifier(OTA) using active resistor of source degeneration was presented.The method was developed through acting differential pair degenerated by two MOSFET operating in the triode region as active resistor in its input stage,the circuit was designed in working in stable quiescent operating point with folded cas-cade output stage using voltage common-mode feedback(CMFB) circuit.As an tunable cutoff frequency fourth order Chebyshev lowpass filter,an accurately tunable Gm of OTA was used,which employed switching capacitor technique to tune Gm value.Simulated results show that the practical frequency response of the filter is very near to that of idealized prototype by applying 2-poly 4-metal 3.3V power supply 0.35μm CMOS technology spice model.http://www.joconline.com.cn/zh/article/74661255/transconductor operational amplifiersource degenerationvoltage common-mode negative feedbackOTA-C filterChebyshev filter
spellingShingle JIANG Jin-guang
WANG Yao-nan
Design and simulation of a tunable frequency OTA -C Chebyshev filter
Tongxin xuebao
transconductor operational amplifier
source degeneration
voltage common-mode negative feedback
OTA-C filter
Chebyshev filter
title Design and simulation of a tunable frequency OTA -C Chebyshev filter
title_full Design and simulation of a tunable frequency OTA -C Chebyshev filter
title_fullStr Design and simulation of a tunable frequency OTA -C Chebyshev filter
title_full_unstemmed Design and simulation of a tunable frequency OTA -C Chebyshev filter
title_short Design and simulation of a tunable frequency OTA -C Chebyshev filter
title_sort design and simulation of a tunable frequency ota c chebyshev filter
topic transconductor operational amplifier
source degeneration
voltage common-mode negative feedback
OTA-C filter
Chebyshev filter
url http://www.joconline.com.cn/zh/article/74661255/
work_keys_str_mv AT jiangjinguang designandsimulationofatunablefrequencyotacchebyshevfilter
AT wangyaonan designandsimulationofatunablefrequencyotacchebyshevfilter