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SC-CMFB for MDAC (Read 339 times)
designerH
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SC-CMFB for MDAC
Apr 22nd, 2017, 2:39pm
 
Dear all,

I would like to ask you about the biasing of an MDAC residue amplifier.
The topology of the amplifier is depicted in the figure, attached to this post. As understood, CMFB sets the output voltage.

This is the fact that any mismatch will diminish the DC output voltage even a SC-CMFB is utilized, and one output will go up and other will go down. How can the amplifier be designed robust against process variations?

I hope to receive your comments.
Sincerely  
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MDAC_bias.png
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