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1.5 V CMOS companding filter

1.5 V CMOS companding filter

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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.

References

    1. 1)
      • Log-domain filtering: an approach to current-mode filtering
    2. 2)
      • Micropower log-domain active inductor
    3. 3)
      • Generalized translinear circuit principle
    4. 4)
      • Current-mode companding √x-domain integrator
    5. 5)
      • Square root domain filter design and performance
    6. 6)
      • Systematic design of companding systems by component substitution
http://iet.metastore.ingenta.com/content/journals/10.1049/el_20020913
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