Method for the self-calibration of an A/D or D/A converter in which the weighted references of the at least one main network are partially calibrated once per calibration cycle

Granted: Oct 20, 1998 Filed: Apr 4, 1996

This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.