clock generation
Post on 30-Dec-2015
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Clock Generation. T rising = 50 ps. T falling = 50 ps. Switch-capacitor CMFB. [1] Gray’s book: Chapter 12, 12.5.4 Switched-Capacitor CMFB [2] “Analysis of Switched-Capacitor Common-Mode Feedback Circuit” by Ojas Choksi. - PowerPoint PPT Presentation
TRANSCRIPT
Clock Generation
Ph2
Ph1
Ph1e
2500ps
250ps 250ps
100ps
Ph2e
100ps
Trising = 50 ps
Tfalling = 50 ps
Switch-capacitor CMFB
[1] Gray’s book: Chapter 12, 12.5.4 Switched-Capacitor CMFB[2] “Analysis of Switched-Capacitor Common-Mode Feedback Circuit” by Ojas Choksi
Cb
Cb Ca
Ca
Ph1 Ph2Vop
Von
VCMFB VB4
0.5VDD
0.5VDD
=
Ph1
Ph2
Ph2
Ph1
Ph2C1
C2
Ph1e
Ph1e
Vcmo
Vcmi
Ph2
Ph1
Ph1
C3Ph1
C4Ph1
Ph2
C1
C2
Vcmo Ph2
Ph1
Ph1
C3Ph1
C4Ph1
Ph1
Vin+
Vin-
Vout+
Vout-
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