A Wide Dynamic Range Four-Quadrant CMOS Analog Multiplier Using Active Feedback

摘要

A new circuit structure for a CMOS four-quadrant analog multiplier is presented. In this circuit, the active feedback technique is used to obtain high linearity and wide input dynamic range. The simulation results show that the proposed multiplier can offer ±1.8V input dynamic range for a ±2.5V supply voltage, which is much larger than the conventional CMOS analog multipliers.