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.
