Hi AvionicsMaster1,
For my measurement i have used a professional laboratory PSU.
For my experiment i have used a pic16f676 on a breadboard and with a direct connection to LM35.
When i try to read the output voltage from LM35, i make a minimun of 32 ADC lecture and take out the middle, and it work very good if the temperature stay around 10 degree but when it falling down under this value i get more instability in reading the voltage output from the sensor. Instead if i try to read the output with a multimeter i get alway a stable meause.
In the weekend i will try with a different circuit and with a different PIC sample.
In anyway for the future i will use a DS1820 chip for avoid any problems and for simply use of it with any kind of PIC.