signal protection
28.1 Fingerprint identification electrostatic protection scheme
The human body is the largest electrostatic carrier, and it usually carries tens of thousands of volts of voltage. In the dry season of autumn and winter, static electricity
Electricity is easier to accumulate on the human body. Fingerprint recognition is used as an inevitable contact with people. Electrostatic protection display
It is very important.
This solution uses a single device for protection , saves space, ensures signal integrity, and meets IEC61000-4-
2 , level 4 , contact discharge 20kV , air discharge 20kV
