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Altera_Forum
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16 years ago

interface stratixIV with an external ultrafast comparator

Hi everybody :) we need to interface ultrafast comparator- ADCMP572 - of analog device to a stratix4 device to perform one bit conversion. we expect that the comparator will ouput very short...
Altera_Forum's avatar
Altera_Forum
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16 years ago

Using the latch feature of the comparator would guarantee proper sampling by the GT receiver. In the other case we rely on the sampling mechanism built into the the GT receiver, which is for receiving centered aligned data. But it is certainly worth considering. Note that the comparator's data sheet specifies a 80 ps minimum pulse width or 6.25 GHz.