Active-R tunable integrators using a current differencing buffered amplifier

作者：Nandi R^*; Das S; Kar Mousiki; Das Sagarika

来源：International Journal of Electronics, 2010, 97(2): 129-137.

DOI：10.1080/00207210903168835

• integrator
• active-R circuit
• CDBA

Some new active-R integrator realisation schemes using the transadmittance pole of a current differencing buffered amplifier (CDBA) element are presented. The time constant (tau) is tunable by a single resistor whereas the integrator quality factor (Q) can be made very large with suitable realisability design. The active sensitivities of tau and Q are extremely low. As an application, a variable frequency sinusoid oscillator utilising the integrators in a loop has also been designed. Practical results using the hardware implementation and by PSPICE macromodel simulation are included for a frequency range of 1 MHz < f < 24 MHz.

• 出版日期2010