AN820 Datasheet, PDF (3/5 Pages) STMicroelectronics – In cars, the number of functions carried out by electronic components

AN820 APPLICATION NOTE
Figure 4. Input / Output protection by diode array circuit of the DA series
+V
+V
INPUT
or
µC
OUTPUT
PROTECTION AND FILTERING
The circuit of Figure 5 assumes both overvoltage protection and filtering functions. The protection is car-
ried out by the clamping device while the filtering is made by coupling resistor R and the parasitic capac-
itance of the clamping device.
Figure 5. Input / Output protection and filtering
SENSOR
R
R
µC INPUT
PROTECTION SUMMARY
The input/output protection and even the filtering can be carried out by the ESDA, ITA and DA protector
series of STMicroelectronics. Developed using the ASD^TM concept, and available in surface mount pack-
ages, these devices offer both space saving and layout optimization.
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