Electronics > Projects, Designs, and Technical Stuff

Poor mans analog multiplier

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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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