New 1.5-V CMOS second generation current conveyor based on wide range transconductor

摘要

This paper presents a novel CMOS low-voltage and low-power positive second-generation current conveyor (CCII +). The proposed CCII + uses two n-channel differential pairs instead of the complementary differential pairs; i.e. (n-channel and p-channel), to realize the input stage. This solution allows almost a rail-to-rail input and output operation; also it reduces the number of current mirrors needed in the input stage. The CCII + is operating at supply voltages of ±0.75 V with a total standby current of 133 μA. The application of the proposed CCII + to realize a MOS-C second order maximally flat low-pass filter is given. PSpice simulation results for the proposed CCII + and its application are given.