I am using the LM35DT TO-220 package .
My first question is which circuit on the system design examples in the data sheet provides the correct temperature readings as per your manufactured design specification.
When I connect it to a 4.07 v supply and use figure 12 (with 2 core screened cable of 1 meter length using the screen as the output) I get a different reading to figure 16 with the same cable . If I connect without resistors as per figure 14 it is different again with only the supply + and -.connected and the output leg not connected to a cable.
If I use the above cable with figure 12 and take a measurement at the pin with the output disconnected at the output pin leg (no resistor) I get 114mv when I connect the cable and take a reading at the end of the 1 meter cable with the resistor 2k I get 131mv. When both are connected the readings are 131mv on the output pin and 133mv at the end of the resistor at the other end of the cable.
If your design team can recommend the simplest and most accurate connection method for a 1 meter length of cable and what cable type that would be great and which system design circuit was the unit designed for (so I can use this as a reference check for a second unit) so I can ensure that I am not introducing errors with my cable connections and other designs using this part.
Thanks.