A new biquad circuit realizing high-order MOSFET-C filters

A new biquad circuit realizing high-order MOSFET-C filters

The MOSFET-C continuous-time biquadratic building block proposed by A.E. Said et al. (1991) does not realize all generic transfer functions. When implemented in a high-order realization, it requires the addition of unity gain inverters. A new biquad circuit is proposed to overcome the above problems...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Raslan, N.A., Said, A.E., Elkfafi, M.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Band pass filters
Filtering
Inverters
MOSFET circuits
Operational amplifiers
Performance analysis
Prototypes
Resistors
SPICE
Transfer functions
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Beschreibung
Zusammenfassung:The MOSFET-C continuous-time biquadratic building block proposed by A.E. Said et al. (1991) does not realize all generic transfer functions. When implemented in a high-order realization, it requires the addition of unity gain inverters. A new biquad circuit is proposed to overcome the above problems. It achieves a complete MOS nonlinearity cancellation and does not require the use of fully balanced op amps. An example of a second-order biquad filter is analyzed using SPICE. A high-order implementation of the proposed biquad is also given. All design steps are matched with the 3.3- mu m CMOS design rules.< >
DOI:10.1109/MWSCAS.1992.271349