Low power consumption auto-bias reference voltage source

Abstract

The invention provides a low power consumption auto-bias reference voltage source which comprises a starting circuit, a bias compensation circuit and a common source and common barrier band gap circuit, wherein the starting circuit provides starting current to the reference voltage source; the bias compensation circuit provides bias voltage to the reference voltage source and achieves temperature curvature compensation of the circuit; the influence of power supply voltage fluctuation and ambient temperature change on the circuit is avoided; precise, stable and undistorted operation of the reference voltage source is ensured; the bias compensation circuit achieves a bias function via balance between transistor junction voltage and MOS (metal oxide semiconductor) grid source voltage; a bias resistor is not required; the power consumption of the circuit is effectively reduced; the common source and common barrier band gap circuit is used for generating and outputting reference voltage and can operate only with very low power supply voltage; and the power consumption of the reference voltage source is further reduced. According to the low power consumption auto-bias reference voltage source, no resistor is used in a circuit structure design; the working current is small; a circuit structure is simple; the occupied chip area is small; and the power consumption is very low.

Description

technical field [0001] The invention relates to the design of a reference voltage source circuit system, in particular to the design of a low power consumption self-biased reference voltage source. Background technique [0002] The reference voltage source is an important part of the circuit system, which provides a reference for the precise and stable operation of the circuit system. In the environment of temperature changes, the reference voltage sources widely used at present can well maintain their stability and accuracy. However, the noise generated by the power supply and the circuit still has a great influence on the reference voltage source. Today, with the continuous development of circuit integration technology, the power consumption and volume of traditional reference voltage sources can no longer meet the requirements of high circuit integration. Therefore, it is of great significance to further improve the anti-interference performance of the reference voltage...

AI Technical Summary

Problems solved by technology

However, the noise generated by the power supply and the circuit still has a great influence on the reference voltage source

Today, with the continuous development of circuit integration technology, the power consumption and volume of traditional reference voltage sources can no longer meet the requirements of high circuit integration.

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