1.5 V CMOS companding filter

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1.5 V CMOS companding filter

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© IEE
Published

A 1.5 V CMOS integrated filter based on MOS translinear techniques is presented. The internal voltage swing compression due to its companding nature, together with the biasing strategy employed, lead to very low supply voltage requirements. Measurement results demonstrate on silicon the proposed technique, readily extendable to higher-order filters.

Inspec keywords: current-mode circuits; low-pass filters; low-power electronics; CMOS analogue integrated circuits; compandors

Other keywords: Si; low-voltage integrated circuit; SRD low-pass filter; 1.5 V; current-mode filter; biasing method; internal voltage swing compression; MOS translinear technique; CMOS companding filter

Subjects: Filters and other networks; CMOS integrated circuits

References

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      • D.R. Frey . Log-domain filtering: an approach to current-mode filtering. IEE Proc. G , 6 , 406 - 416
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      • J. Ngarmnil , C. Toumazou . Micropower log-domain active inductor. Electron. Lett. , 11 , 953 - 955
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