Simulation And Analysis of Various Bandgap Reference Circuits

Abstract

In analog integrated circuits, it is essential to provide accurate and undisturbed circuits. Bandgap reference circuits could use a Bipolar transistor to generate positive temperature coefficient voltage and negative temperature coefficient voltage, which could reduce the influence of temperature. Therefore, it is used widely in analog integrated circuits. This paper first introduces the basic notion of a bandgap reference circuit, including its characteristics that are not affected by voltage, temperature, and process, so that the circuit works stably in a stable state. Then, the circuit structure of several mainstream bandgap reference sources is deduced and analyzed and their performance is verified by simulation experiments. Finally, a circuit with a higher-order temperature coefficient is proposed analyzed, and simulated.