Abstract

This paper presents realization of current-mode active-R filter in order to increase the speed of circuits for analog signal processing and to decrease the supply voltages of integrated circuits. The proposed filter is constructed using operational amplifiers [OA] and resistors. The circuit capable of realizing  quadratic transfer function .The proposed second order high pass filter circuit works ideal for Q >=1 at center Frequency F₀ = 50 KHz .The gain roll-off of this configuration is 40dB/decade. Since the circuit is composed only of resistances, it is suitable for high frequency operation and monolithic implementation. The filters developed were successful in obtaining passive sensitivities less than unity in magnitude and active sensitivities are half in magnitude, which is a noteworthy achievement.

Key words: Current mode filter, second order, high pass, center frequency.