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Design >> Analog Design >> offset cancellation
https://designers-guide.org/forum/YaBB.pl?num=1487357101

Message started by Mikay on Feb 17^th, 2017, 10:45am

Title: offset cancellation
Post by Mikay on Feb 17^th, 2017, 10:45am

Hi Is there anyone who is familiar with the offset cancellation technique mentioned in the following link?

I can understand the Fig.3: 2xδVBE Differential With Offset Cancellation well. But when it comes to Fig.4: Multi-Phase Current Switching. I'm quite confused. can anyone know the circuits well?

Thanks in advance.

the paper cited is in this link.
https://pdfs.semanticscholar.org/9d6f/baee6c45527791ee4bdd455bc0a126a0756c.pdf

Title: Re: offset cancellation
Post by loose-electron on Mar 20^th, 2017, 9:18pm

Looks like they are integrating a current onto the capacitors to compensate for the non ideal offset.