Laurent
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- posted
19 years ago
45 Ohms or 90 Ohms ?
USB 2.0 -> D+ D- Differential Impedance ?
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- posted
19 years ago
Sorry for my last question. I understood the mistake.
The series resistance plus the USB driver output resistance must be close to the USB cable?s impedance of 45 unbalanced (90 balance) to minimize transmission line reflections.
Laurent Gauch
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- Vote on answer
- posted
19 years ago
Sorry for my last question. I understood the mistake.
The series resistance plus the USB driver output resistance must be close to the USB cable?s impedance of 45 unbalanced (90 balance) to minimize transmission line reflections.
Laurent Gauch
formatting link