A 1.8V high dynamic-range CMOS high-speed four quadrant multiplier

A low-voltage (less than or equal to 3V) CMOS four quadrant multiplier is introduced which has an almost rail-to-rail differential-input-swing with a low signal-distortion differential for 100kHz signal). The proposed circuit is composed of a pair of rail-to-rail differential-input V-I converters and a pair of voltage-followers. This topology of multiplier results in a high frequency capability with low power consumption. In a 1.2 mu m n-well CMOS process, the 3dB frequency of the multiplier is in a range of 103MHz. Measured total power consumption is around 0.52mW with supply voltage 2V. The multiplier can operate at a minimum supply voltage of 1.8V.