Title :
Current differencing buffered amplifier (CDBA) based current-mode filters
Author :
Kilinc, S. ; Cam, Ugur
Author_Institution :
Dokuz Eylul Univ., Izmir, Turkey
Abstract :
A new current-mode second-order filter configuration is proposed. Using the presented configuration, lowpass, highpass, bandpass and notch filters can be realized employing only a single current differencing buffered amplifier (CDBA), two capacitors and two resistors which are minimum in number. The high output impedance of the proposed filter configuration enables the circuits to be cascaded without requiring additional buffers. All passive sensitivities are no more than one half in magnitude. The theoretical results are verified with PSPICE simulations using a CMOS realization of CDBA.
Keywords :
CMOS analogue integrated circuits; active filters; amplifiers; band-pass filters; current-mode circuits; electric impedance; high-pass filters; integrated circuit design; low-pass filters; notch filters; sensitivity; CMOS realization; bandpass filters; capacitors; current differencing buffered amplifier; current-mode filters; highpass filters; lowpass filters; notch filters; output impedance; passive sensitivity; resistors; second-order filter; Art; Band pass filters; Capacitors; Circuit simulation; Impedance; Resistors; SPICE;
Conference_Titel :
Signal Processing and Communications Applications Conference, 2004. Proceedings of the IEEE 12th
Print_ISBN :
0-7803-8318-4
DOI :
10.1109/SIU.2004.1338610
