A Novel Current-Mode OTA-C Universal Filter
Muhammad Taher Abuelma’atti and Abdulwahab Bentrcia
A novel current-mode biquad circuit is presented. The circuit uses two single-output-, one multiple-output-operational transconductance amplifiers (OTAs), two grounded capacitors and can realize lowpass, highpass, bandpass, notch, lowpass notch, highpass notch and allpass responses from the same topology. The parameters wo and wo /Qo enjoy independent electronic tunability. Simulation results are included.