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

fYear

2006

fDate

6-7 Sept. 2006

Firstpage

3

Lastpage

6

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Electronics, 2006. AE 2006. International Conference on

Conference_Location

Pilsen

Print_ISBN

80-7043-442-2

Type

conf

DOI

10.1109/AE.2006.4382949

Filename

4382949