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Single miller capacitor frequency compensation techniques: Theoretical comparison and critical review
Author(s) -
Grasso Alfio Dario,
Marano Davide,
Palumbo Gaetano,
Pennisi Salvatore
Publication year - 2022
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.3244
Subject(s) - transconductance , capacitor , frequency compensation , cmos , phase margin , electronic engineering , figure of merit , transistor , capacitance , operational transconductance amplifier , bandwidth (computing) , amplifier , electrical engineering , gain–bandwidth product , operational amplifier , computer science , engineering , voltage , physics , telecommunications , electrode , quantum mechanics , computer vision
This paper presents a systematic analytical comparison of the single‐Miller capacitor frequency compensation techniques suitable for three‐stage complementary metal–oxide–semiconductor (CMOS) operational transconductance amplifiers (OTAs). The comparison is carried out with the aid of a figure of merit that expresses a trade‐off among gain‐bandwidth product, load capacitance, and total transconductance, for equal values of the phase margin. The results found can be used before the transistor‐level design step and provide useful guidelines for the optimization of the small‐signal performance. Simulations by using a 65‐nm standard CMOS technology confirming the effectiveness of the theoretical comparison for 10 different OTA topologies are also provided.