分析了目前几种高性能连续时间 CMOS电流比较器的优缺点 ,提出了一种新型 CMOS电流比较器电路 .它包含一组具有负反馈电阻的 CMOS互补放大器、两组电阻负载放大器和两组 CMOS反相器 .由于 CMOS互补放大器的负反馈电阻降低了它的输入、输出阻抗 ,从而使电压的变化幅度减小 ,所以该电流比较器具有较短的瞬态响应时间和较快的速度 .电阻负载放大器的使用减小了电路的功耗 .利用 1.2 μm CMOS工艺 HSPICE模型参数对该电流比较器的性能进行了模拟 ,结果表明该电路的瞬态响应时间达到目前最快的 CMOS电流比较器的水平 ,而功耗则低于这些比较器 ,具有最大的速度 /功耗比 .此外 ,该 CMOS电流比较器结构简单 ,性能受工艺偏差的影响小 ,适合应用于高速 /低功耗电流型集成电路中 This paper analyzes the advantages and disadvantages of several high performance continuous current CMOS current comparators, and proposes a novel CMOS current comparator circuit which includes a CMOS complementary amplifier with negative feedback resistance, two resistive load amplifiers and two CMOS Inverter. The current comparator has short transient response time and fast speed because of the negative feedback resistance of the CMOS complementary amplifier which reduces its input and output impedance so as to reduce the voltage variation. The use of a load amplifier reduces the power consumption of the circuit, and the performance of the current comparator is simulated with HSPICE model parameters of 1.2 μm CMOS technology. The results show that the transient response time of the circuit reaches the fastest CMOS current comparator Level, while the power consumption is lower than these comparators, with the maximum speed / power ratio.In addition, the CMOS current comparator structure is simple, the performance of the small deviation of the process, suitable for high-speed / low-power current-type integrated Circuit