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A highly linear CMOS Gm-C bandpass filter with on-chip frequency tuning

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3 Author(s)
Zhong Yuan Chang ; Alcatel Bell Telephone, Antwerp, Belgium ; Haspeslagh, D. ; Verfaillie, J.

A fourteenth-order CMOS transconductance-C (Gm-C) bandpass filter with on-chip automatic frequency tuning is described. By using highly linear Gm-C integrators, the filter achieves 75 dB dynamic range over 700 kHz noise bandwidth. The measured intermodulation distortion (IM3) @ 600 kHz for a 4 Vpp 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-μm CMOS filter measures 4.8 mm 2 and consumes 70 mW from a single 5 V power supply

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:32 ,  Issue: 3 )

Date of Publication:

Mar 1997

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