Residue transfer loop, successive approximation register analog-to-digital converter, and gain calibration method

US11296714B2 · kind B2 · utility

Assignee

• Radiawave Technologies Co., Ltd. · CN

Inventors

• Xiaofeng Guo · Shanghai, CN
• Erkan Alpman · Portland, US
• Jon Sweat Duster · Beaverton, US
• Haigang Feng · Lo Wu, CN
• Ning Zhang · Saratoga, US
• Yulin Tan · Hillsboro, US

Key dates

• Filing date: May 12, 2021
• Grant date: Apr 5, 2022
• Expiry date: May 12, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03M1/1245
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

A residue transfer loop, a successive approximation register analog-to-digital converter and a gain calibration method are disclosed. In particular, the residue transfer loop includes a sampling switch module, a logic controlling circuit, a residue holding capacitor module, a DAC capacitor array, a residue transfer module, a current rudder, a reset switch module and a charge sharing switch module. The logic controlling circuit sequentially outputs control signals according to preset time intervals in a preset period to control the reset switch module, the residue transfer module, the sampling switch module and the charge sharing switch module to work sequentially, thereby realizing a residue transfer.