Abstract
A new ESD failure mechanism has been found in the analog pins with pure-diode protection scheme during ND-mode ESD stress. The failure is caused by the parasitic npn interaction between ESD protection diode and guard ring structure. The parasitic npn bipolar, which was constructed between the N+/PW diode and the N+/NW guard ring, provides the discharging path between the I/O pad to the grounded VDD under the ND-mode ESD stress to cause a low ESD robustness of the analog I/O cell. The solution to overcome this ESD failure is also proposed.
Original language | English |
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Pages | 209-212 |
Number of pages | 4 |
DOIs | |
State | Published - Jun 2005 |
Event | 12th International Symposium on the Physical and Failure Analysis of Integrated Circuits, IPFA 2005 - Singapore, Singapore Duration: 27 Jun 2005 → 1 Jul 2005 |
Conference
Conference | 12th International Symposium on the Physical and Failure Analysis of Integrated Circuits, IPFA 2005 |
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Country/Territory | Singapore |
City | Singapore |
Period | 27/06/05 → 1/07/05 |