Navia PN6280, Руководство пользователя, Страница: 30 / 40

PN6280_Hardware Design
Copyright © JSC NIIMA PROGRESS and NAVIA LLC
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GND
±4KV ±8KV
RF_ANT
±4KV ±8KV
Enhanced ESD performance method:
1
、
If the customer to the adapter plate, the adapter plate anchor as much as possible, and the
uniform distribution of conduction path width
；
2
、
Key (reset key) need to add ESD device; reset key to walk the line do not rely on the edge of the
board
；
3
、
USB, UART and other plug connection need to add ESD devices, the other from the outside of
the machine out of the control line also need to add ESD devices;
4
、
SIM card, users will get inserted t-card touch the place also need to add ESD device
；
5
、
External antenna, please add ESD device, ESD C
pf
<0.5pF.
Notes: For ESD protect, please add ESD methods according to upper ways.
High speed circuits like USB, TF and SIM card should be added ESD with low
capacity value.
ESD components include varistors and TVS. For better performance, please use
TVS.