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Fully-differential operational
amplifier
Apinunt Thanachayanont
![Page 2: Fully-differential operational amplifierapinunt.yolasite.com/resources/Mixed-IC/HO7_opamp2.pdf · Fully-differential operational amplifier ApinuntThanachayanont. ... 2-stage fully-differential](https://reader034.vdocuments.site/reader034/viewer/2022042803/5f4e0100c5ec24719c5c25e0/html5/thumbnails/2.jpg)
Why differential opamp?
2010Mixed-signal ICs Design, A. Thanachayanont2
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2-stage fully-differential opamp
2010Mixed-signal ICs Design, A. Thanachayanont3
![Page 4: Fully-differential operational amplifierapinunt.yolasite.com/resources/Mixed-IC/HO7_opamp2.pdf · Fully-differential operational amplifier ApinuntThanachayanont. ... 2-stage fully-differential](https://reader034.vdocuments.site/reader034/viewer/2022042803/5f4e0100c5ec24719c5c25e0/html5/thumbnails/4.jpg)
2-stage fully-differential opamp with
push-pull output
2010Mixed-signal ICs Design, A. Thanachayanont4
![Page 5: Fully-differential operational amplifierapinunt.yolasite.com/resources/Mixed-IC/HO7_opamp2.pdf · Fully-differential operational amplifier ApinuntThanachayanont. ... 2-stage fully-differential](https://reader034.vdocuments.site/reader034/viewer/2022042803/5f4e0100c5ec24719c5c25e0/html5/thumbnails/5.jpg)
Folded-cascode differential opamp
2010Mixed-signal ICs Design, A. Thanachayanont5
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Common-mode output voltage
stabilization
2010Mixed-signal ICs Design, A. Thanachayanont6
![Page 7: Fully-differential operational amplifierapinunt.yolasite.com/resources/Mixed-IC/HO7_opamp2.pdf · Fully-differential operational amplifier ApinuntThanachayanont. ... 2-stage fully-differential](https://reader034.vdocuments.site/reader034/viewer/2022042803/5f4e0100c5ec24719c5c25e0/html5/thumbnails/7.jpg)
Common-mode output voltage
stabilization
2010Mixed-signal ICs Design, A. Thanachayanont7
![Page 8: Fully-differential operational amplifierapinunt.yolasite.com/resources/Mixed-IC/HO7_opamp2.pdf · Fully-differential operational amplifier ApinuntThanachayanont. ... 2-stage fully-differential](https://reader034.vdocuments.site/reader034/viewer/2022042803/5f4e0100c5ec24719c5c25e0/html5/thumbnails/8.jpg)
CMFB concept
2010Mixed-signal ICs Design, A. Thanachayanont8
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2-stage opamp with CMFB
2010Mixed-signal ICs Design, A. Thanachayanont9
![Page 10: Fully-differential operational amplifierapinunt.yolasite.com/resources/Mixed-IC/HO7_opamp2.pdf · Fully-differential operational amplifier ApinuntThanachayanont. ... 2-stage fully-differential](https://reader034.vdocuments.site/reader034/viewer/2022042803/5f4e0100c5ec24719c5c25e0/html5/thumbnails/10.jpg)
CMFB circuit using resistive divider
2010Mixed-signal ICs Design, A. Thanachayanont10
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CMFB circuit (1)
2010Mixed-signal ICs Design, A. Thanachayanont11
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CMFB circuit using resistive divider (2)
2010Mixed-signal ICs Design, A. Thanachayanont12
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CMFB circuit using resistive divider (1)
2010Mixed-signal ICs Design, A. Thanachayanont13
![Page 14: Fully-differential operational amplifierapinunt.yolasite.com/resources/Mixed-IC/HO7_opamp2.pdf · Fully-differential operational amplifier ApinuntThanachayanont. ... 2-stage fully-differential](https://reader034.vdocuments.site/reader034/viewer/2022042803/5f4e0100c5ec24719c5c25e0/html5/thumbnails/14.jpg)
CMFB circuit using dual diff. pairs
2010Mixed-signal ICs Design, A. Thanachayanont14
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CMFB circuit using triode MOSFETs
2010Mixed-signal ICs Design, A. Thanachayanont15