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A 5/sup th/ order LP butterworth OTA-C filter with automatic tuning system

Authors :
Qin Shicai
Qi Feitao Qi Feitao
Gao Qinyun Gao Qinyun
Chen Haoqiong
Chen Dianyu
Source :
2003 5th International Conference on ASIC Proceedings (IEEE Cat No 03TH8690) ICASIC-03.
Publication Year :
2003
Publisher :
IEEE, 2003.

Abstract

This paper introduces a continuous time 5th order LP Butterworth OTA-C filter with cutoff frequency of 16 MHz. The automatic tuning system is implemented based on PLL with a special VCO. The simulation results show that the accuracy of the cutoff frequency is less than 1% and, even in the worst case, less than 3%.

Details

Database :
OpenAIRE
Journal :
2003 5th International Conference on ASIC Proceedings (IEEE Cat No 03TH8690) ICASIC-03
Accession number :
edsair.doi...........d9b6dd04cdcc514d9fe02a1cbf6dfccc