Title :
A new 90NM CMOS current feedback operational amplifier
Author :
Elsayed, Fahmi ; Ibrahim, Mohamed F. ; Ghallab, Yehya H. ; Badawy, Wael ; Maundy, Brent
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Calgary, Calgary, AB
Abstract :
A new Current Feedback Amplifier (CFA) suitable for VLSI applications is presented in two different designs to serve both low power (LBW design) and high bandwidth (HBW) applications. The new circuit is employing positive current conveyor followed by amplifier followed by buffer to achieve very high trans-impedance for this CFA circuit without needing to stack many transistors together and at the same time to use the whole bandwidth range. The proposed circuit is designed and simulated using 90 nm technology kit in cadence. The bandwidth of the LBW circuit is approximately constant at 32 MHz and for HBW is around 107 MHz.
Keywords :
CMOS analogue integrated circuits; VHF amplifiers; VLSI; current conveyors; current-mode circuits; feedback amplifiers; low-power electronics; operational amplifiers; CMOS amplifier; VLSI design; current feedback amplifier; current mode device; low power design; operational amplifier; positive current conveyor; size 90 nm; trans-impedance; Application software; Bandwidth; Circuit topology; Feedback amplifiers; Feedback circuits; Frequency; Impedance; Operational amplifiers; Stacking; Very large scale integration; Current mode device; VLSI; current conveyor; current feedback amplifier;
Conference_Titel :
Electrical and Computer Engineering, 2009. CCECE '09. Canadian Conference on
Conference_Location :
St. John´s, NL
Print_ISBN :
978-1-4244-3509-8
Electronic_ISBN :
0840-7789
DOI :
10.1109/CCECE.2009.5090258
