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Fully balanced tunable GaAs MESFET OTA-C integrator suitable for high precision filtering applications

Fully balanced tunable GaAs MESFET OTA-C integrator suitable for high precision filtering applications

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The Letter describes a novel, fully balanced differential input OTA-C integrator with independent control of transconductance Gm and output conductance G0, featuring very low total harmonic distortion.

References

    1. 1)
      • P. Visocchi , J. Taylor , A. Betts , D. Haigh . A novel tunable GaAs Mesfet OTA-C integrator suitable for high precision filtering applications. Electron. Lett. , 18 , 1671 - 1673
    2. 2)
      • R. Schaumann , M.S. Ghausi , K.R. Laker . (1990) , Design of analogue filters passive, active RC and switched capacitor.
    3. 3)
      • Wu, P., Schaumann, R., Latham, P.: `Design considerations for common-mode feedback circuits in fully-differential operational transconductance amplifiers with tuning', Proc. 1991 IEEE Symp. Circuits Syst., June 1991, Singapore, p. 1363–1366.
    4. 4)
      • D. Haigh , J. Everard . (1989) , GaAs technology and its impact on circuits and systems.
    5. 5)
      • Wu, P., Schaumann, R.: `A 200 MHz elliptic OTA-C filter in GaAs technology', Proc. 1991 IEEE Symp. Circuits Syst., June 1991, Singapore, p. 1745–1748.
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