Title :
A Wideband CMOS Current-Mode Operational Amplifier and Its Use for Band-Pass Filter Realization
Author :
Altun, Mustafa ; Kuntman, Hakan
Author_Institution :
Tech. Univ., Istanbul
Abstract :
In this paper, a CMOS current-mode operational amplifier (COA) based on a novel, class A input stage and a folded-cascode output stage is presented. The amplifier provides a 95 dB DC gain and a gain-bandwidth product exceeding 200 MHz. The COA is operated under plusmn1.5 V voltage supplies and designed with 0.35-mum CMOS process. Additionally, COA-based band-pass filter is realized. In a multiple feedback band-pass filter topology, COA can be used instead of voltage amplifier to enhance the bandwidth of operation. The center frequency of the filter is 10 MHz.
Keywords :
CMOS integrated circuits; band-pass filters; operational amplifiers; wideband amplifiers; band-pass filter realization; current-mode operational amplifier; folded-cascode output stage; frequency 10 MHz; gain 95 dB; gain-bandwidth product; multiple feedback band-pass filter topology; size 0.35 mum; voltage amplifier; wideband CMOS amplifier; Band pass filters; Bandwidth; Broadband amplifiers; CMOS process; Feedback; Frequency; Gain; Operational amplifiers; Topology; Voltage;
Conference_Titel :
Applied Electronics, 2006. AE 2006. International Conference on
Conference_Location :
Pilsen
Print_ISBN :
80-7043-442-2
DOI :
10.1109/AE.2006.4382949
