Title :
A high slew-rate voltage-mode op-amp
Author :
Hunt, Michael Vere ; Lidgey, John
Author_Institution :
Sch. of Eng., Oxford Polytech., UK
Abstract :
The authors present a new architecture of a voltage-mode operational amplifier (VOA) which has been designed to provide high common-mode rejection ratio (CMRR) performance. The new amplifier attempts to retain the high slew-rate advantages of the current-feedback operational amplifier but within a balanced high input impedance structure, enabling it to be used as a conventional VOA. The amplifier is being developed as a high speed device operational amplifier. The key feature of the amplifier is an input stage with a similar dynamic response to the current-feedback operational amplifier. The new design is analyzed, and SPICE simulation results are presented
Keywords :
SPICE; circuit analysis computing; operational amplifiers; SPICE simulation; VOA; common-mode rejection ratio; dynamic response; high input impedance structure; input stage; slew-rate; voltage-mode op-amp; Character generation; Circuit synthesis; Design engineering; Feedback; Impedance; Operational amplifiers; SPICE; Topology; Transconductance; Voltage;
Conference_Titel :
Circuits and Systems, 1992. ISCAS '92. Proceedings., 1992 IEEE International Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0593-0
DOI :
10.1109/ISCAS.1992.230651
