Multiplying Circuit 3(LM101A,HA2-2520)

Published:2011/7/22 5:38:00 Author:Sue | Keyword: Multiplying Circuit | From:SeekIC

The picture shows the multiplying circuit. A1 composes voltage-control current source. A2 composes voltage comparator. A3 composes active low pass filter. When the time constant R1C1 is equal to the clock pulse period, the relation between the input and output is: Vo=-V1V2/E. If E =1V, then Vo=-V1V2. V1,V2 are required to be positive and should be limited within 10V. V1 should be slightly lower than E. The resistor R1,R2 and capacitor C1 are required to use components with good temperature stability. A1 is HA2-2520. A2,A3 is LM101A.



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