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介绍了一种工作在低电源电压下的CMOS四象限模拟乘法器．为保证在较低的电源电压下有较大的线性电压输入范围和较小的非线性失真，电路采用了特殊的设计．SPICE的模拟结果表明，在±2．5V电源电压下，线性输入范围大于±1．5V，在此范围内该电路的总谐波失真小于0．8％，-3dB带宽分别大于3．0MHz和8．5MHz，功耗小于1．4mW．特别当电源电压降低至±1．5V时电路仍可正常工作，具有大于±0．5V的线性输入范围和小于0．4％的总谐波失真，表明该电路完全适用于低电压供电系统．
A CMOS four-quadrant analog multiplier operating at low supply voltage is introduced. The circuit uses a special design to ensure a large linear voltage input range and small non-linear distortion at lower supply voltages. The simulation results of SPICE show that the linear input range is greater than ± 1.5V at ± 2.5V supply voltage, the total harmonic distortion of the circuit is less than 0.8% in this range, - 3dB bandwidth is greater than 3.0MHz and 8.5MHz, power consumption less than 1.4mW. Especially when the supply voltage is reduced to ± 1.5V, the circuit can still work normally with a linear input range greater than ± 0.5V and total harmonic distortion less than 0.4%, indicating that the circuit is fully suitable for low voltage power supply systems.