A Compact Bulk-Driven Four-Quadrant Analog Multiplier in Weak Inversion

This paper presents a low-voltage low-power four-quadrant analog multiplier using subthreshold MOS devices. The proposed design requires six transistors and two current sources in order to form a cross-coupling connection of four body-driven exponential cells. Circuit simulation using 0.35-μm CMOS process parameters in Cadence environment shows that the proposed circuit consumes 480 nW static power from a supply voltage of 0.8 V. It outperforms the previously reported circuits in terms of circuit complexity and power consumption.