Window comparator configuration

UM1955

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DocID028405 Rev 1

Equation 8

•

If P2 equals its maximum value (500 k):

•

If P2 equals its minimum value (0):

From a software standpoint, the D2 and D4 pins on the Arduino UNO R3 connectors or

PA10 and PB5 on the ST morpho connectors (not mounted in the expansion board) must be

monitored.

7.3

Theoretical output

The operational amplifier output toggles when the signal is out of the specified window.

D2: high state

D4: low state

D2: high state

D4:high state

D2: low state

D4: high state

Figure 10 depicts the different states:

Figure 10. Window comparator explanation