Title :
A 270 MHz, 1.8 V fully differential CMOS operational amplifier for switched capacitor channel select filters in wide-band wireless applications
Author :
Nejad-Malayeri, Amir Hossein ; Manku, Tajinder
Author_Institution :
Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada
Abstract :
A low-power 1.8 V very high performance operational amplifier has been designed in 0.18 μm CMOS technology, in order to be used in switched capacitor (SC) channel select filters for IS-95 as well as 3G wireless receivers. An in depth description of the design procedure and all the considerations which have been made to optimize the performance of this amplifier are presented. It exhibits a very large GBW (Gain-Bandwidth) product of 270 MHz while it has a DC gain of 53 dB. A very high slew-rate of 78.8 V/μs makes the utilization of high clock frequency for the SC filter very simple
Keywords :
CMOS analogue integrated circuits; low-power electronics; operational amplifiers; radio receivers; switched capacitor filters; 1.8 V; 270 MHz; 3G; 53 dB; DC gain; IS-95; clock frequency; design optimization; gain-bandwidth product; low-power fully-differential CMOS operational amplifier; slew rate; switched capacitor channel select filter; wideband wireless receiver; Bandwidth; Broadband amplifiers; CMOS technology; Capacitors; Differential amplifiers; Filtering; Filters; Frequency; Operational amplifiers; Transceivers;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.921942
