Performance comparison of high-order IFLF and LF linear phase lowpass OTA-C filters with and without gain boost
Author
Hasan, M.
Sun, Y.
Attention
2299/5517
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.
Publication date
2010Published in
Analog Integrated Circuits and Signal ProcessingPublished version
https://doi.org/10.1007/s10470-009-9424-5Other links
http://hdl.handle.net/2299/5517Metadata
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