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Multiplying DAC question

Question asked by chin.and on May 8, 2014
Latest reply on May 8, 2014 by msamera

What is the difference between a 2 quadrant and 4 quadrant multiplying DAC?

 

From what I gather, a 2 quadrant can take a bipolar signal (provided the other input is not below 0), but only have an output above the 0V bias reference. So this means that while a DAC could have a -10 to +10V swing, the output will only be able to produce a 0 to 10V swing.

 

A 4 quadrant, on the other hand, can take a bipolar signal (even with the other input negative). Also, the output is bipolar, so you can get a wave centered around 0 with the full -10V to 10V swing. Is that right?

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