Digital high-stability alternating current reference source and analog integrated circuit

The utility model discloses a digital high-stability alternating current reference source, and belongs to the technical field of high-stability reference sources. The digital high-stability AC reference source comprises a Wien bridge oscillation circuit, an adjustable resistor, an A/D conversion unit, a control unit and a high-order narrow-band filter, the Wien bridge oscillation circuit is used for outputting an oscillation signal, the adjustable resistor is used for processing the oscillation signal and obtaining an effective amplitude of the oscillation signal, and the control unit is used for processing the effective amplitude and an input voltage amplitude parameter and controlling resistance input of the adjustable resistor according to a processing result. The adjustable resistor controls the establishment and stability of oscillation of the Wien bridge oscillation circuit through the change of resistance input; and the high-order narrow-band filter is used for filtering and separating the oscillation