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rajesh13
Joined: 07 Jul 2004
Posts: 126
Location: Milky Way
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 10 Aug 2004 13:01 BIST for I/Os circuits |
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| Does anybody have some info about the BIST (Built in self testing) for I/Os circuits.
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brmadhukar
Joined: 21 Jun 2002
Posts: 844
Helped: 29
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| 10 Aug 2004 15:18 Re: BIST for I/Os circuits |
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Hi,
NASA has some information about BIST for digital circuits. For analog design you would have to monitor the voltages at some specific points.
B R M
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yjkwon57
Joined: 31 Jul 2004
Posts: 221
Helped: 21
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| 10 Aug 2004 21:34 Re: BIST for I/Os circuits |
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Hi~~
The BIST is used for convenient testing of some regular digital logic, such as memories. I have never heard the BIST to be used in the analog circuit testing. But, I do not mean any built-in alnalog test circuit cannot be integrated into the analog IC. If so, it will be fantastic.
Bye~~
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bluestatic
Joined: 04 Aug 2004
Posts: 28
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| 15 Aug 2004 16:42 Re: BIST for I/Os circuits |
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OK, if you are just talking about the normal IO pad cell, in their testing, the electrical specification is more important, which means most of the time you have to generate test vector to measure Voh Vol, leakage current etc.
If you refer to a wider range of IO, for example, high speed interface IO, for all these analog block, sometimes designer will build in BIST circuit, which used for testing in FAB.
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