
354
Unused terminals on the package
The circuit can be made as simple or as complex as needed and can be made to com-
pensate virtually any voltage TC curve. It would allow a lot of flexibility and let you
monitor various key elements or circuit conditions, and compensate the TC as often as
needed—even remotely across the Internet.
12.4 Unused terminals on the package
Many voltage references have pins labeled as “NC” (no connection), but some are
actually connected to internal circuitry. They are used for test and trimming purposes
at the factory. With some products they should be left unconnected (i.e., they float),
whereas others may need to be grounded. ...