Performance comparison of continuous-time IFLF and LF low-pass all-pole OTA-C filters

H.W. Su, Y. Sun

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)
31 Downloads (Pure)


This paper presents the performance comparison of two typical multiple loop feedback all-pole operational transconductance amplifier-capacitor (OTA-C) filters: inverse-follow-the-leader-feedback (IFLF) and leapfrog (LF) filters. Two fourth-order structures are analysed and compared in terms of sensitivity, maximum input signal, noise, and OTA nonideality effects on magnitude response. Simulation results obtained show that the LF structure is better than the IFLF structure in these four performances. The comparison is based on the realisation of the fourth-order Butterworth low-pass characteristic with 1 MHz cut-off frequency.
Original languageEnglish
Title of host publicationProcs of the IEEE Asia-Pacific Conf on Circuits & Systems
Subtitle of host publicationAPCCAS 2000
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
ISBN (Print)0-7803-6253-5
Publication statusPublished - 2000


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