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access icon free Digitally controlled fully differential voltage- and transadmittance-mode biquadratic filter

© The Institution of Engineering and Technology
Received 07/02/2012, Accepted 27/11/2012, Revised 10/11/2012, Published

This study introduces a digitally controlled biquadratic filter operating in fully differential mode and realising voltage and transadmittance functions simultaneously. The proposed circuit is based on the active element namely, digitally current controlled differential voltage current conveyor and three passive components. The proposed circuit offers wide range and non-interactive digital control over filter parameters and also exhibits wide dynamic range. The fully differential nature is well justified by the high common mode rejection ratio of the proposed circuit. Non-ideal and parasitic analyses are performed and extensive simulations carried out to verify the proposed circuit.

Inspec keywords: biquadratic filters

Other keywords: passive components; digitally controlled fully differential transadmittance-mode biquadratic filter; digitally current controlled differential voltage current conveyor; noninteractive digital control; digitally controlled fully differential voltage-mode biquadratic filter

Subjects: Active filters and other active networks

References

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