Current-tunable current-mode all-pass section using DDCC

This paper presents a new dual input current-mode first-order all-pass filter employing one differential difference current conveyor, one grounded capacitor and three grounded resistors. The use of grounded passive component makes the circuit suitable for integrated circuit implementation. The output terminals also have high impedance level which enables easy cascading in current-mode operation. The performances of the proposed circuit are simulated with PSPICE to confirm the present theory. © 2011 IEEE.