Widely used IC monolithic multiplication circuit

Published:2011/5/11 5:49:00 Author:Fiona | Keyword: IC monolithic multiplication | From:SeekIC

Circuit functionIn addition to be general multiplication, Analog multiplication has many other uses, such as balanced modem, synchronous detection, voltage controlled attenuator, oscillators. This circuit is a basic wiring diagram of an analog device company’s single IC multiplier AD532. Because it has been minute adjusted by the laser in-house, it can remove potentiometer that being used to adjust the X, Y input set of partial balance, just adjusts the output as long as the home side. Circuit WorkAD532 is a differential input of the four-quadrant multiplier. It can be EO = [(X1-X2) * (Y1-Y2)] / 10 op. The input voltage range is 0 ~ +10 V, usually uses 1 / 10 scale factor.IC internal is multiplication unit composed of multiplier circuits known as Gilbert , the output impedance is low and no needs external components. The internal IC has been minute adjusted by the laser, there is no need cumbersome adjustment.The circuit only has the output offset adjustment V.AdjustmentBecause the circuit only has the offset adjustment, it only illustrates the AD533 that has not be minute adjusted.In Figure A just has one more variable resistor.It can use the basically same adjustment with the AD532.



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