A digital automatic tuning technique for high-order continuous-time filters Academic Article

abstract

• A digital automatic tuning technique for high-order continuous-time filters is proposed. Direct tuning of overall response is achieved without separating individual biquad sections, eliminating switches and their parasitics. Output phase of each biquad section is tuned to known references, which are generated by a frequency synthesizer. The core tuning circuit consists of D flip-flops (DFF) and simple logic gates. DFFs are utilized to perform binary phase detection. Frequency and quality factor tuning loops for each biquad are controlled digitally, providing more stable tuning by activating only one loop at a given time. The tuning system was verified by a prototype sixth-order bandpass filter which was fabricated in a conventional 0.5 m CMOS process with 1.5 V power supply. 2004 IEEE.

authors

• Karsilayan, Aydin

published proceedings

• IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS

altmetric score

• 3

author list (cited authors)

• Sumesaglam, T., & Karsilayan, A. I.

citation count

• 18

complete list of authors

• Sumesaglam, T||Karsilayan, AI

publication date

• October 2004

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• IEEE Transactions on Circuits and Systems I: Regular Papers  Journal

keywords

• Cmos Analog Integrated Circuits
• High-order Filter Tuning
• Low Voltage
• Ota-c Filter
• Transconductance
• Tuning

Digital Object Identifier (DOI)

• 10.1109/TCSI.2004.835686

start page

• 1975

end page

• 1984

volume

• 51

issue

• 10

URL

• http%3A%2F%2Fdx.doi.org%2F10.1109%2Ftcsi.2004.835686