Title :
A CMOS fifth-order low-pass current-mode filter using a linear transconductor
Author :
Shaker, Mohamed O. ; Mahmoud, Soliman A. ; Soliman, Ahmed M.
Author_Institution :
Dept. of Electron. & Commun., Cairo Univ., Giza
Abstract :
In this paper, the design and analysis of a CMOS fifth-order low-pass GM-C filter are presented. It has a cutoff frequency of 4.3 MHz to accommodate the wideband CDMA standard. The transconductor used in this filter is based on a four-transistor cell operating in triode or saturation mode. It achieves high linearity range of plusmn 1 V at plusmn 1.5 V supply voltages. PSpice simulations show that total harmonic distortion at 1 Vpp and 1 MHZ is equal to 0.1% with 1.234 mW standby power dissipation. The proposed filter and the transconductor are simulated using 0.35 mum technology
Keywords :
CMOS analogue integrated circuits; SPICE; continuous time filters; current-mode circuits; low-pass filters; operational amplifiers; 0.35 micron; 1 V; 1.234 mW; 1.5 V; 4.3 MHz; CMOS current-mode filter; GM-C filter; PSpice simulations; fifth-order low-pass filter; harmonic distortion; linear transconductor; power dissipation; wideband CDMA standard; Cutoff frequency; Linearity; Low pass filters; Multiaccess communication; Nonlinear filters; Power harmonic filters; Total harmonic distortion; Transconductors; Voltage; Wideband; Transconductor; current mode filter;
Conference_Titel :
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Conference_Location :
Island of Kos
Print_ISBN :
0-7803-9389-9
DOI :
10.1109/ISCAS.2006.1692767
