EMRFD Message Archive 2532
Message Date From Subject 2532 2008-12-30 06:01:42 Kenneth Stringham Differential LO Drive Tim,
Look at the internal circuitry in the DBM devices. The ring diode type mixers will gain no advantage with differential drive. Only the active type mixers represented by the SA-602 type mixers can achieve improved performance with this type of drive.
Ken - AE1X
2533 2008-12-30 06:21:11 Jim Miller Re: Differential LO Drive i think that's true only if you have relatively high supply voltages.
if you have a 3.3v system and take into consideration diode drops,
vcesat, etc you might want to have a differential drive to ensure
sufficient forward voltage and drive current across the two diode