Dynamic bias voltage reference source

The invention belongs to the technical field of analog integrated circuits and particularly relates to a dynamic bias voltage reference source. In order to improve power stability of the reference source, a first negative feedback circuit is arranged additionally; a second positive feedback circuit is added in the negative feedback circuit to increase a feedback factor of the negative feedback circuit to obtain a large loop magnification factor, and consequently power stability of the reference source is greatly improved, and high power supply rejection ratio is achieved. Compared with a static bias voltage reference source, the dynamic bias voltage reference source has the advantages that core bias demands of the reference source are met while influences of power voltage disturbance on output signals of the voltage reference source are reduced, power stability of the reference source is improved, and high power supply rejection ratio is achieved.