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Altera_Forum's avatar
Altera_Forum
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17 years ago

Importance of Impedance Matching

Hello, I haven't done digital design since college and I'm still building up some general knowledge. Here's my situation: I'm doing a design with the MAX II and I would like to use our ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Honestly for what your doing you're probably fine. At 20MHz just use a low drive strength on the driver.

Please note that I do not give this advice as a general recommendation. The vast majority of the time, trace impedance is very important. Most of my boards have DDR2 and 3Gb serial channels. At 3Gb, even the tiniest mismatch in impedance impacts the signal.

But for what your doing, I think you'll be okay.

Jake