一种低压高频CMOS电流乘法器的设计

摘要

提出了一种新颖的高频四象限电流乘法器电路,该乘法器使用了工作在三极管区的互补MOS器件,并且采用了饱和区MOS管的平方律特性.该电路采用0.35 μm CMOS工艺,使用HSpice软件仿真.仿真结果显示,该乘法器电路在士1.18V的电源电压下工作时,静态功耗为1.18 mW,-3 dB带宽可达到1.741 GHz.与先前的电流乘法器电路相比,工作电压降低了,带宽提高了.%A new high-frequency four-quadrant current multiplier is presented. The current multiplier uses complementary MOS devices working in triode region and adopts the squarelaw characteristic of saturated MOS transistor. The circuit employs 0. 35μm technique of CMOS. The results of HSPICE simulation show that the proposed multiplier has a static-state power dissipation of 1. 18 Mw and the cut-off frequency is 1. 741 GHz when multiplier circuit works at the supply voltage of ± 1.18 V. Compared with the previous current multiplier circuits, this multiplier circuit can work at lower voltage and higher frequency.