An active parallel-resistor-inductor using single active element, namely, voltage differencing differential difference amplifier (VDDDA) is proposed in this paper. For this purpose, the resistance and inductance values can be electronically tuned by adjusting bias current of VDDDA. With this feature, the proposed active parallel-RL is attractive to apply in modern electronic devices. The proposed circuit consists of one VDDDA, one resistor and one grounded capacitor. The performance of the proposed active parallel-RL is simulated by PSpice using parameters of 0.18mm TSMC CMOS technology. The simulated results agree well to theoretical anticipation. In particular, the application example as voltage-mode second order high-pass filter using proposed parallel-RL is included to show its usability.

VDDDA, CMOS, inductance simulator, integrated circuit, biomedical signal processing.