Highly integrated low-power reference source

Abstract

The invention relates to the field of integrated circuits, specifically to a highly integrated low-power reference source. According to the highly integrated low-power reference source provided by the invention, a digital reference voltage source, an analog reference voltage source, a current bias reference source and a band gap reference voltage source are skillfully combined as an integrated circuit for meeting the multipurpose requirement, and the reusable circuit units in the existing reference source are simplified, so that the whole reference source has a simple circuit structure and still has high performances; on the other hand, since an electronic system works stably, a starting circuit is automatically closed to avoid quiescent dissipation, so that the operation is high in reliability and the requirement on greatly reducing the quiescent dissipation is met; and at last, the highly integrated low-power reference source provided by the invention can further adjust the voltage values output by the digital reference voltage source, the voltage values output by the analog reference voltage source, the current values output by the current bias reference source and the reference voltage values output by the band gap reference voltage source according to various requirements.

Description

technical field [0001] The invention relates to the field of integrated circuits, in particular to a highly integrated low-power reference source. Background technique [0002] The reference source is a unit module that provides precise voltage or current bias for an analog circuit unit or an analog-digital hybrid circuit unit. As the bias circuit of the electronic system, the reference source is a necessary functional module of the electronic system. Reference sources mainly include digital reference voltage sources, analog reference voltage sources, current bias reference sources and bandgap reference voltage sources. [0003] The internal structure of the existing reference source is divided into at least two independent functional modules: one is the output of the digital reference voltage source and the analog reference voltage source by the LDO (Low Dropout Regulator, low dropout linear regulator) inside the chip; The generation of the reference voltage and bias curr...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a highly integrated low-power reference source, which aims to solve the technical problems of large static power consumption and complex overall structure existing in the existing reference source

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