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open drain layout (drain connect to analog IO pad)
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calibre



Joined: 13 Jun 2006
Posts: 10
Post17 Nov 2006 10:03   

open drain layout (drain connect to analog IO pad)
I have a circuit that some devices terminal(D) connected to pad and they are not in I/O, now some question need you help ASAP.? thanks!
1. These device should be layouted to ESD device or normal device?
2. If these device must follow ESD rule, how i care about match issue？
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Post17 Nov 2006 10:03   

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sunking



Joined: 25 May 2004
Posts: 914
Helped: 46
Post18 Nov 2006 12:07   

open drain layout (drain connect to analog IO pad)
they need to layout as ESD device
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Fom



Joined: 10 Mar 2004
Posts: 778
Helped: 57
Location: Taiwan
Post21 Nov 2006 2:03   

Re: open drain layout (drain connect to analog IO pad)
Consider not only ESD but LATCH-UP also.
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