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ESD Protection

Just received the latest flyer from Maxim. It advertises 12 bit
touch screen controller (MAX1233/MAX1234) chips with on
chip +/- 15kV ESD protection. Any idea how they do that?
 
S

SQLit

Jan 1, 1970
0
Just received the latest flyer from Maxim. It advertises 12 bit
touch screen controller (MAX1233/MAX1234) chips with on
chip +/- 15kV ESD protection. Any idea how they do that?

grounding and shielding are common ways of protecting from ESD. Check the
installation instructions. I will bet that they recommend an shielded cable
for communication.
 
SQLit said:
grounding and shielding are common ways of protecting from ESD. Check the
installation instructions. I will bet that they recommend an shielded cable
for communication.
Right - but they state it is on-chip protection. I'm wondering
what they do on the chip.
 
S

SQLit

Jan 1, 1970
0
Right - but they state it is on-chip protection. I'm wondering
what they do on the chip.

Shielding the outside of an chip is not all that hard in today's
electronics. Metal shell grounded to the circuit board would do it. Just
grounding the case of the screen would help with ESD. I doubt that we are
talking about any large amounts of ESD any way. Put an high voltage field
generator beside it and I AM sure it would be effected.
 
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