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The NEXT cable Thread
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<blockquote data-quote="pwatts" data-source="post: 914833" data-attributes="member: 146"><p>In the simplest possible implementation, where a differential output is a mere duplicate of the single-ended output (or rather, the SE output just a single phase of the differential output), it will be 6dB hotter. However, this is simplistic and also not the best method since that will for example also mess up the source impedance and drive strength symmetry if both the differential and SE outputs are used simultaneously. Therefore on more serious designs, the two outputs are separately buffered and in that case there is no rule of the gain relationships between the two; it is up to the designer to choose the most appropriate gain for either.</p><p></p><p>As a side note about dynamic range: on very good designs it is possible for differential to raise the dynamic range somewhat. However this is not guaranteed, and is usually less than 6dB or even none since the extra gain often just raises the noise also by 6dB and therefore has zero effect on DR.</p></blockquote><p></p>
[QUOTE="pwatts, post: 914833, member: 146"] In the simplest possible implementation, where a differential output is a mere duplicate of the single-ended output (or rather, the SE output just a single phase of the differential output), it will be 6dB hotter. However, this is simplistic and also not the best method since that will for example also mess up the source impedance and drive strength symmetry if both the differential and SE outputs are used simultaneously. Therefore on more serious designs, the two outputs are separately buffered and in that case there is no rule of the gain relationships between the two; it is up to the designer to choose the most appropriate gain for either. As a side note about dynamic range: on very good designs it is possible for differential to raise the dynamic range somewhat. However this is not guaranteed, and is usually less than 6dB or even none since the extra gain often just raises the noise also by 6dB and therefore has zero effect on DR. [/QUOTE]
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