DocumentCode :
453678
Title :
A method to effectively decrease the settling time of gain-boost OTA
Author :
Huang, Feipeng ; Huang, Yumei ; Ze, Dedong ; Hong, Zhiliang
Author_Institution :
ASIC & Syst. State Key Lab., Fudan Univ., Shanghai
Volume :
1
fYear :
2005
fDate :
24-0 Oct. 2005
Firstpage :
419
Lastpage :
422
Abstract :
A method was proposed to decrease the settling time of gain-boost folded cascode operational trans-conductance amplifier (OTA). Through the small-signal analysis of gain-boost OTA, the expression of pole and zero was attained successfully; then the effect of pole-zero (doublet) on settling time was revealed fully. To reduce its effect, a method was finally proposed that the unity-gain frequency (omegaur) of regulation amplifier should be a little larger than the unity-gain frequency (omegauc) of core amplifier. This method was proven to be effective by simulation result
Keywords :
operational amplifiers; poles and zeros; gain-boost OTA; operational transconductance amplifier; settling time; small-signal analysis; Application specific integrated circuits; Capacitors; Energy consumption; Feedback circuits; Filters; Frequency; Laboratories; Operational amplifiers; Poles and zeros; Transfer functions;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
ASIC, 2005. ASICON 2005. 6th International Conference On
Conference_Location :
Shanghai
Print_ISBN :
0-7803-9210-8
Type :
conf
DOI :
10.1109/ICASIC.2005.1611350
Filename :
1611350
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=453678
بازگشت