This circuit was suggested by Motorola in a 1969 publication. It makes use of components of the time, but both the FET and the bipolar may be general purpose current types.
This circuit was found in a 2006 publication. It uses discrete components and CMOS that are still...
The sensor of this circuit is a common diode, and the measured range is from -10 to + 40º C. The...
The circuit presented was found in the Linear Applications Handbook of the National Semiconductor of 1994....