DocumentCode
2447163
Title
A CMOS single-ended OTA with high CMRR
Author
Pribytko, Maxim ; Quinn, Patrick
Author_Institution
Xilinx Ireland, Dublin, Ireland
fYear
2003
fDate
16-18 Sept. 2003
Firstpage
293
Lastpage
296
Abstract
A high CMRR single-ended current-mirror OTA employing a novel current CMFB is proposed. The OTA input/output common mode range, die area, power and slewing speed are not affected. The settling speed is reduced by 5%-20%. The current CMFB boosts the OTA CMRR by a factor of 30 while allowing integration of conventional OTA improvements. A unified approach relating the CMRR and transistor mismatches is proposed. The OTA was manufactured in a standard 0.25/spl mu/m CMOS process as a precision functional block of a 12 bit algorithmic ADC.
Keywords
CMOS analogue integrated circuits; analogue-digital conversion; current mirrors; operational amplifiers; 0.25 microns; CMOS single-ended OTA; OTA CMRR; algorithmic ADC; current CMFB; high CMRR; precision functional block; settling speed; single-ended current-mirror OTA; standard CMOS process; transistor mismatches; unified approach; Boosting; CMOS logic circuits; Dynamic range; Feedback; Filters; Impedance; Manufacturing; Mirrors; Tail; Transconductance;
fLanguage
English
Publisher
ieee
Conference_Titel
Solid-State Circuits Conference, 2003. ESSCIRC '03. Proceedings of the 29th European
Conference_Location
Estoril, Portugal
Print_ISBN
0-7803-7995-0
Type
conf
DOI
10.1109/ESSCIRC.2003.1257130
Filename
1257130
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