Novel sampled-data MOS multiplier

In many analogue systems, such as correlators, adaptive filters, curve-fitting etc., analogue multipliers are required. However, common MOS multipliers do not match the performance of bipolar ones. In the letter, a new one-quadrant multiplier concept suitable for MOS systems applications is presented. The method is based on time-division concept and its building blocks are well known MOS subcircuits such as comparators, operational amplifiers, and current sources. The properties of the system are demonstrated using computer simulations.