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