FOUR QUADRANT MULTIPLIER USING BI-POLAR DIGITAL ANALOG CONVERTER

摘要

There is disclosed a four quadrant multiplier circuit whose output is the bi-polar product of a signed analog voltage and a signed voltage expressed as a digital word. The circuit includes matrix resistors in a bi-polar converter which are switched between the reference voltage and the inverse of the reference voltage. Four quadrant multiplication is accomplished with only one resistor matrix and the use of complementary transistor pairs as bi-polar matrix resistor switches.