Performance comparison of high-order IFLF and LF linear phase lowpass OTA-C filters with and without gain boost

M. Hasan; Y. Sun

doi:10.1007/s10470-009-9424-5

Performance comparison of high-order IFLF and LF linear phase lowpass OTA-C filters with and without gain boost

M. Hasan, Y. Sun

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Design and performance comparison of high-order operational transconductance amplifier and capacitor (OTA-C) filters using leapfrog (LF) and inverse-follow-the-leader-feedback (IFLF) structures are investigated. The filters are designed for a 125 MHz seventh-order equiripple group delay lowpass characteristic with and without gain boost and simulated in 0.25 μm 2-V CMOS. A fully differential highly linear OTA with cross-coupled input pairs and regulated cascode output is used for the simulation. Simulated results show that while the IFLF OTA-C filter can achieve a higher gain boost, the LF OTA-C filter has better other performances.

Original language	English
Pages (from-to)	451-463
Journal	Analog Integrated Circuits and Signal Processing
Volume	63
Issue number	3
DOIs	https://doi.org/10.1007/s10470-009-9424-5
Publication status	Published - 2010

Keywords

active filters
continuous-time filters
OTA-C filters
multiple loop feedback filters
linear phase filters

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10.1007/s10470-009-9424-5

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title = "Performance comparison of high-order IFLF and LF linear phase lowpass OTA-C filters with and without gain boost",

abstract = "Design and performance comparison of high-order operational transconductance amplifier and capacitor (OTA-C) filters using leapfrog (LF) and inverse-follow-the-leader-feedback (IFLF) structures are investigated. The filters are designed for a 125 MHz seventh-order equiripple group delay lowpass characteristic with and without gain boost and simulated in 0.25 μm 2-V CMOS. A fully differential highly linear OTA with cross-coupled input pairs and regulated cascode output is used for the simulation. Simulated results show that while the IFLF OTA-C filter can achieve a higher gain boost, the LF OTA-C filter has better other performances.",

keywords = "active filters, continuous-time filters, OTA-C filters, multiple loop feedback filters, linear phase filters",

author = "M. Hasan and Y. Sun",

note = "Original article is available at : http://www.springerlink.com/ Copyright Springer [Full text of this article is not available in the UHRA]",

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T1 - Performance comparison of high-order IFLF and LF linear phase lowpass OTA-C filters with and without gain boost

AU - Hasan, M.

AU - Sun, Y.

N1 - Original article is available at : http://www.springerlink.com/ Copyright Springer [Full text of this article is not available in the UHRA]

PY - 2010

Y1 - 2010

N2 - Design and performance comparison of high-order operational transconductance amplifier and capacitor (OTA-C) filters using leapfrog (LF) and inverse-follow-the-leader-feedback (IFLF) structures are investigated. The filters are designed for a 125 MHz seventh-order equiripple group delay lowpass characteristic with and without gain boost and simulated in 0.25 μm 2-V CMOS. A fully differential highly linear OTA with cross-coupled input pairs and regulated cascode output is used for the simulation. Simulated results show that while the IFLF OTA-C filter can achieve a higher gain boost, the LF OTA-C filter has better other performances.

AB - Design and performance comparison of high-order operational transconductance amplifier and capacitor (OTA-C) filters using leapfrog (LF) and inverse-follow-the-leader-feedback (IFLF) structures are investigated. The filters are designed for a 125 MHz seventh-order equiripple group delay lowpass characteristic with and without gain boost and simulated in 0.25 μm 2-V CMOS. A fully differential highly linear OTA with cross-coupled input pairs and regulated cascode output is used for the simulation. Simulated results show that while the IFLF OTA-C filter can achieve a higher gain boost, the LF OTA-C filter has better other performances.

KW - active filters

KW - continuous-time filters

KW - OTA-C filters

KW - multiple loop feedback filters

KW - linear phase filters

U2 - 10.1007/s10470-009-9424-5

DO - 10.1007/s10470-009-9424-5

M3 - Article

SN - 0925-1030

VL - 63

SP - 451

EP - 463

JO - Analog Integrated Circuits and Signal Processing

JF - Analog Integrated Circuits and Signal Processing

IS - 3

ER -

Performance comparison of high-order IFLF and LF linear phase lowpass OTA-C filters with and without gain boost

Abstract

Keywords

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