Recommendations on board usage

AN2603

14/23

Doc ID 13778 Rev 3

4

Recommendations on board usage

The board shown in Figure 9 is provided with kelvin connection, which means that two lines

are available for each pin, one used for supplying or sinking current and the other used to

perform the necessary measurements.

The ST1S09 Inhibit pin does not have an internal pull up, meaning that the Inhibit pin cannot

be left floating.

Figure 9.

ST1S09 board illustration

Figure 10.

Board layers

The board has two available Inhibit pins. One is located on the right side of the board and

Inhibit pin, located on the top left of the board, can be used to supply an external voltage

greater than 1.3 V to turn ON the device, or lower than 0.4 V to turn OFF the device.

Top layer

Bottom layer