10.1 Layout Guidelines

To achieve the expected results when measuring temperature with an integrated circuit temperature sensor like the LM73, it is important to understand that the sensor measures its own die temperature. For the LM73, the best thermal path between the die and the outside world is through the LM73's pins. In the SOT-23 package, all the pins on the LM73 will have an equal effect on the die temperature. Because the pins represent a good thermal path to the LM73 die, the LM73 will provide an accurate measurement of the temperature of the printed circuit board on which it is mounted.

10.2 Layout Example

Figure 16. PBC Layout