A highly linear CMOS G(m)-C bandpass filter with on-chipfrequency tuning

A fourteenth-order CMOS transconductance-C (G(m)-C) bandpass filter with on-chip automatic frequency tuning is described. By using highly linear G(m)-C integrators, the filter achieves 75 dB dynamic range over 700 kHz noise bandwidth. The measured intermodulation distortion (IM3) 600 kHz for a 4 V(p...

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Bibliographic Details
Published inIEEE journal of solid-state circuits Vol. 32; no. 3; pp. 388 - 397
Main Authors Chang, Zhong Yuan, Haspeslagh, D, Verfaillie, J
Format Journal Article
LanguageEnglish
Published 01.03.1997
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Summary:A fourteenth-order CMOS transconductance-C (G(m)-C) bandpass filter with on-chip automatic frequency tuning is described. By using highly linear G(m)-C integrators, the filter achieves 75 dB dynamic range over 700 kHz noise bandwidth. The measured intermodulation distortion (IM3) 600 kHz for a 4 V(pp) input signal is only -61 dB. On-chip automatic frequency tuning provides more than 300% center frequency range (i.e., 165-505 kHz) of the filter with +/-1% frequency accuracy. The 0.7-mum CMOS filter measures 4.8 mm (2) and consumes 70 mW from a single 5 V power supply
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ISSN:0018-9200
DOI:10.1109/4.557637