System zero-pole calibration method, device, equipment, storage medium and computer program product

Abstract

This application relates to the field of analog integrated circuit technology and discloses a system zero-pole calibration method, apparatus, device, storage medium, and computer program product. The method includes: setting the capacitance configuration of the variable capacitor array of each stage integrator in a Sigma-Delta modulator to an initial state; performing oscillation detection on the capacitor configuration after setting to the initial state; when the modulator is in a non-oscillating state, obtaining the current noise power under the current capacitance configuration; comparing the current noise power with the historical minimum noise power under the current capacitance configuration and selecting the minimum value, updating the capacitor configuration corresponding to the minimum value to the optimal capacitor configuration; returning to the step of performing oscillation detection on the capacitor configuration after setting to the initial state until traversing all capacitor configuration combinations, and completing the zero-pole calibration by outputting the optimal configuration among all capacitor configuration combinations, thereby achieving accurate calibration of the modulator's zeros and poles.

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