Title :
New operational amplifier using a positive feedback
Author :
Lahiji, G. Roientan ; Oleyaie, O. ; Abrishamifar, A.
Author_Institution :
Dept. of Electr. Eng., Iran Univ. of Sci. & Technol., Tehran, Iran
fDate :
5/1/1997 12:00:00 AM
Abstract :
A very high gain bipolar op amp was designed using controlled positive feedback. The circuit has a theoretical voltage gain of 160 dB and unity gain-bandwidth of 3.3 MHz. Despite using positive feedback, the op amp is compensated and a slew rate of 1 V/μs is achieved
Keywords :
feedback amplifiers; operational amplifiers; 160 dB; 3.3 MHz; compensation; controlled positive feedback; high gain bipolar op amp; operational amplifier; slew rate; unity gain-bandwidth; voltage gain; Circuits; Delay; Digital filters; Feedback; Frequency; IIR filters; Nonlinear filters; Operational amplifiers; Signal processing; Vectors;
Journal_Title :
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
