Title :
Open-Loop Analysis of Cascode Compensation
Author :
Aminzadeh, Hamed ; Lotfi, Reza
Author_Institution :
Dept. of Electr. Eng., Mashhad Ferdowsi Univ.
Abstract :
This paper presents a new open-loop analysis for cascode compensation scheme which is often used in high speed two-stage CMOS operational amplifiers (opamps). In the proposed analysis, the effect of zeros in the transfer function is also considered. Analytical approaches in this paper show that cascode compensation is more power efficient than conventional Miller compensation especially for large capacitive loads. Circuit-level simulation based on the derived equations is performed to see the accuracy of derived equations
Keywords :
CMOS integrated circuits; compensation; open loop systems; operational amplifiers; poles and zeros; transfer functions; cascode compensation scheme; circuit-level simulation; high speed CMOS operational amplifiers; open-loop analysis; transfer function; two-stage CMOS operational amplifiers; Capacitors; Degradation; Equations; Frequency; Operational amplifiers; Performance analysis; Resistors; Stability; Transfer functions; Voltage;
Conference_Titel :
Circuits and Systems, 2006 IEEE North-East Workshop on
Conference_Location :
Gatineau, Que.
Print_ISBN :
1-4244-0416-9
Electronic_ISBN :
1-4244-0417-7
DOI :
10.1109/NEWCAS.2006.250912
