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The Designer's Guide Community Forum
https://designers-guide.org/forum/YaBB.pl Design >> Analog Design >> Simple math question... https://designers-guide.org/forum/YaBB.pl?num=1267545261 Message started by Turin on Mar 2nd, 2010, 7:54am |
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Title: Simple math question... Post by Turin on Mar 2nd, 2010, 7:54am If you need to derive the gain of an differential output in db... What you need to calculate is db(out-in) or db(out)-db(in) Thanks |
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Title: Re: Simple math question... Post by pancho_hideboo on Mar 2nd, 2010, 8:03am db(out)-db(in) |
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Title: Re: Simple math question... Post by loose-electron on Mar 2nd, 2010, 1:31pm dbm(out) - dbm(in) = dB gain or dbV(out) - dbV(in) = dB gain If you want to be fussy about definition, dB is a ratio, so there is no such thing as "dB" of a singular measurement Just to nitpick!! :D |
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Title: Re: Simple math question... Post by sos on Mar 2nd, 2010, 5:42pm Turin wrote on Mar 2nd, 2010, 7:54am:
db(out-in) is not correct. Correct would be db(out/in). This is equivalent to db(out)-db(in). Steve |
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