公开(公告)号：US10693490B1

公开(公告)日：2020-06-23

申请号：US16529765

申请日：2019-08-01

Applicant: Faraday Technology Corp.

Inventor： Chiao-Min Chen ,  Min-Yuan Wu ,  Shih-Yi Shih ,  Po-Liang Chen

IPC: H03M3/00

Abstract: A Sigma-Delta (Σ-Δ) analog-to-digital converter (ADC) and operation method thereof are provided. The Σ-Δ ADC includes a Σ-Δ modulator, a dynamic element matching (DEM) circuit and a control circuit. An input terminal of the Σ-Δ modulator is configured to receive an analog signal. The Σ-Δ modulator is configured to convert the analog signal into a digital signal based on a feedback signal. The DEM circuit is coupled to the Σ-Δ modulator to receive the digital signal. The DEM circuit is configured to perform a DEM algorithm on the digital signal to generate a feedback signal, and provide the feedback signal to the Σ-Δ modulator. The control circuit listens to the digital signal to detect a mute period. The control circuit disables the DEM circuit during the mute period to suspend a progress of the DEM algorithm.