Low voltage flipped voltage follower based current mirror using DTMOS technique

Current mirror is one of the basic building blocks of mixed mode and analog VLSI systems. For high performance analog circuit applications at low voltage, the accuracy, bandwidth and power dissipation are the most important parameters to determine the performance of the current mirror. This paper presents an efficient implementation of a flipped voltage follower based current mirror using DTMOS technique suitable for low-voltage applications. A comparison of conventional and proposed current mirror is presented. The proposed circuit is validated with simulation in 0.25μm CMOS TSMC of MOSIS. The proposed DTMOS based current mirror can operate at low voltage of 1.2V with high current copy accuracy and achieves -3dB frequency of 168.48 MHz. The quiescent power dissipation is 102.17μW. Hence the proposed current mirror has a high degree of freedom in low-voltage and low-power signal processing applications.