Electronics > Projects, Designs, and Technical Stuff
Poor mans analog multiplier
mikerj:
--- Quote from: RoGeorge on February 17, 2019, 10:19:31 am ---Either a Gilbert Cell, or maybe a RoGeorge Cell :)
--- End quote ---
Not really equivalent; you have made a multiplying DAC rather than an analog multiplier.
RoGeorge:
--- Quote from: mikerj on February 17, 2019, 11:03:21 am ---Not really equivalent; you have made a multiplying DAC rather than an analog multiplier.
--- End quote ---
Sorry for necroposting, I was in the process of replacing a few pics from the discontinued tinypic.com and noticed that back then I didn't reply to your comment.
Indeed, it is not the same as an analog multiplier, it is rather an Analog x Digital multiplier.
It has the advantage that it can multiply negative voltages, too, and it can multiply with either positive or negative digital values, and it's based on an idea I never seen in other multiplying DACs.
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