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Current-Mode SITO Filter Using a Single Active Component
(IEEE, 2009) Ayten, Umut Engin; Sagbas, Mehmet; Sedef, Herman
In this paper, current-mode filter using new active component, namely; current backward transconductance amplifier (CBTA) is presented. The proposed filter uses two resistors, two capacitors and only one CBTA. It has low active and passive sensitivities. The validity of the proposed circuit is demonstrated by PSPICE simulations and experimental results.
Voltage-Mode Multiphase Sinusoidal Oscillators Using CBTAs
(IEEE, 2012) Sagbas, Mehmet; Ayten, Umut Engin; Herencsar, Norbert; Minaei, Shahram
A voltage-mode multiphase sinusoidal oscillator (MSO) structure using current backward transconductance amplifier (CBTA) is presented. The oscillator can generate n voltage signals (n being even or odd) equally spaced in phase. n+1 CBTAs, n grounded capacitor and a grounded resistor are used for nth-state oscillator. The oscillation frequency can be independently controlled through transconductance (g(m)) of the CBTAs which are adjustable via bias currents. The effects caused by the non-ideality of the CBTA on the oscillation frequency and condition have been analyzed. The performance of the proposed circuit is demonstrated on a third-stage MSO by using PSPICE simulations based on the 0.25 mu m TSMC level-7 CMOS technology parameters.