多功能AB类四象限模拟乘法器

A Versatile Class-AB Four-Quadrant Analog Multiplier

在AB类电流镜基础上应用跨导线性原理设计出一种新颖的电流平方/电流跟随器,并以该模块为基本单元综合设计出一种多功能的四象限模拟乘法器.该乘法器在内部结构和元件参数不变的情况下,根据输入、输出信号的选择可以实现电压模式和电流模式乘法器.采用TSMC 0.35μm CMOS集成工艺对电路进行PSPICE仿真测试,结果表明提出的电路具有带宽宽、功耗低、线性度好等优点,可以作为一个基本模块在电流模式和电压模式电路中应用.

A versatile class-AB analog multiplier was presented in this paper.The current squarer/current follower,based on class-AB current mirror and MOS trans-linear（TL） principle,is the basic building block in realization scheme.Since the multiplier can be driven by current,voltage or both voltage and current without changing the internal circuit structure and element parameters,so it is a versatile analog multiplier.The major advantages of this multiplier are wide band-width,low power consumption,and good linearity.As a result,it can be considered as a useful building block in current-mode and voltage-mode circuits.PSPICE simulator with TSMC 0.35μm CMOS technology parameters is employed to verify the circuit.