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2016•Computación y SistemasOpen access

A 3μW Low-Power CMOS Class-AB Bilateral Current Mirror for Low-Voltage Applications

Victor Hugo Ponce Ponce, Jesús E. Molinar-Solís, José Rivera Mejía, Sergio Sandoval, Miguel Rocha Pérez, Alejandro Díaz Sánchez, Humberto Bracamontes del Toro

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Abstract

This paper presents a compact low-power bidirectional current mirror suitable for low-voltage applications. The key element is the use of a CMOS complementary input stage working in subthreshold regime; which allows setting a reduced bias current through the mirror. The circuit was simulated using LTSpice and presents class AB operation with a THD of 1% at 1MHz. The power consumption is close to 3μW as shown by simulations and experimental data from a fabricated prototype using 0.5µm CMOS technology.

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What this paper is about

This paper presents a compact low-power bidirectional current mirror suitable for low-voltage applications. The key element is the use of a CMOS complementary input stage working in subthreshold regime; which allows setting a reduced bias current through the mirror. The circuit was simulated using LTSpice and presents class AB operation with a THD of 1% at 1MHz. The power consumption is close to 3μW as shown by simulations and experimental data from a fabricated prototype using 0.5µm CMOS technology.

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Available abstract

This paper presents a compact low-power bidirectional current mirror suitable for low-voltage applications. The key element is the use of a CMOS complementary input stage working in subthreshold regime; which allows setting a reduced bias current through the mirror. The circuit was simulated using LTSpice and presents class AB operation with a THD of 1% at 1MHz. The power consumption is close to 3μW as shown by simulations and experimental data from a fabricated prototype using 0.5µm CMOS technology.

Key concepts: Current mirror, CMOS, Subthreshold conduction, Low voltage, Electrical engineering, Low-power electronics, Current (fluid), Transistor

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