Design and Analysis of an Enhanced CMOS Current Mirror Circuit for Low-Power Analog Applications

Pooja 1, Prof .Sadhana C 2, Dr.Basavalinga Swamy 3 , Dr.Sharanbasappa Shetkar 4 , Dr.Vinita Patil 5

1Pooja Dept of VLSI Design and Embedded system, M.tech student,LAEC, Bidar 2Prof .Sadhana C, Assistant Professor, Department of ECE, LAEC Bidar 3Dr.Basavalinga Swamy, Associate Professor, Department of ECE,LAEC Bidar 4Dr.Sharanbasappa Shetkar, Professor, Department of ECE, LAEC Bidar 5Dr.Vinita Patil, Professor, Department of ECE, LAEC Bidar

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Abstract - Current mirrors are fundamental building blocks in analog integrated circuits, providing accurate bias currents for amplifiers, voltage regulators, data converters, and other analog systems. This paper presents the design and analysis of an enhanced CMOS current mirror circuit for low-power analog applications. The proposed circuit employs six MOSFETs, an operational amplifier, and supporting bias circuitry to improve current matching accuracy, output resistance, and overall circuit stability compared with conventional current mirror configurations. The circuit is designed to operate from a 5 V supply with a 1 mA reference current and is implemented and verified using LTspice simulation software. DC sweep analysis demonstrates that the output current closely follows the reference current while maintaining stable operation over the desired voltage range. The simulation results confirm accurate current mirroring, improved bias stability, and low-power operation, making the proposed design suitable for analog integrated circuit applications.

KeyWords: CMOS Current Mirror, LTspice, MOSFET, Analog Integrated Circuits, Low-Power Design, Operational Amplifier, Current Mirroring, Analog VLSI.