- Patent Title: Correction method and correction circuit for sigma-delta modulator
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Application No.: US16519739Application Date: 2019-07-23
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Publication No.: US10742230B2Publication Date: 2020-08-11
- Inventor: Chih-Lung Chen , Jie-Fan Lai , Yu-Chang Chen , Shih-Hsiung Huang
- Applicant: REALTEK SEMICONDUCTOR CORPORATION
- Applicant Address: TW Hsinchu
- Assignee: REALTEK SEMICONDUCTOR CORPORATION
- Current Assignee: REALTEK SEMICONDUCTOR CORPORATION
- Current Assignee Address: TW Hsinchu
- Agency: WPAT, PC
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@60ff816d
- Main IPC: H03M1/06
- IPC: H03M1/06 ; H03M3/00

Abstract:
A correction method and a correction circuit for a sigma-delta modulator (SDM) are disclosed. The SDM includes a loop filter, a quantizer, and a digital-to-analog converter (DAC), and the loop filter includes a resonator. The correction circuit includes a memory and a control circuit. The memory stores multiple program instructions. The control circuit executes the program instructions to correct the SDM. The correction procedure of the SDM includes the following steps: inputting a test signal to the SDM; obtaining a signal characteristic value of an output signal of the SDM; and adjusting the resonator according to the signal characteristic value.
Public/Granted literature
- US20200091929A1 Correction method and correction circuit for sigma-delta modulator Public/Granted day:2020-03-19
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