Four Quadrant Linear Multipliers — Practical Considerations and Applications

  • G. B. Clayton


Four quadrant linear multipliers are variable gain devices with special properties. Multiplication is a fundamental operation in signal processing but high cost and circuit complexity have, in the past, limited the usefulness of a multiplying element. Like the operational amplifier the multiplier was once mainly used in the specialised field of analogue computation, but again, like the op. amp., the availability of a multiplying module in a low cost integrated circuit form has resulted in its use in an ever widening variety of applications. The product ranges of the manufacturers specialising in circuit modules contain a variety of multiplying devices; we restrict our attention to monolithic multipliers employing the variable transconductance circuit technique discussed in chapter 4.


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  1. 1.
    R.S. Brown and D. Sullivan AD530 Complete Monolithic MDSSR Technical Bulletin, Analog Devices (July 1971)Google Scholar
  2. 2.
    Non-Linear Circuits Handbook, Analog Devices (In Print)Google Scholar
  3. 3.
    D. Sheingold Trigonometric Operations with the 433, Analog Dialogue Vol 6, No 3Google Scholar

Copyright information

© G. B. Clayton 1975

Authors and Affiliations

  • G. B. Clayton
    • 1
  1. 1.Department of PhysicsLiverpool PolytechnicUK

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