发明申请
- 专利标题: SINGLE-LOOP SWITCHED-CAPACITOR ANALOG-TO-DIGITAL SIGMA-DELTA CONVERTER
- 专利标题(中): 单环开关电容器模拟到数字信号转换器
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申请号: US11423200申请日: 2006-06-09
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公开(公告)号: US20060279449A1公开(公告)日: 2006-12-14
- 发明人: Sergio Pernici , Federico Garibaldi
- 申请人: Sergio Pernici , Federico Garibaldi
- 申请人地址: IT Agrate Brianza (MI)
- 专利权人: STMicroelectronics S.r.l.
- 当前专利权人: STMicroelectronics S.r.l.
- 当前专利权人地址: IT Agrate Brianza (MI)
- 优先权: EP05425416.4 20050609
- 主分类号: H03M1/12
- IPC分类号: H03M1/12
摘要:
A single-loop differential switched-capacitor sigma-delta converter has a three stage double-sampling architecture with reduced current consumption. The converter is stable for large input dynamics, which makes it suitable for RF applications. The three-stage multi-bit double-sampled architecture has a single-loop architecture in which all integrators are included in a same feedback loop. This has been made possible based upon the type of integrators that are connected in cascade. Functioning of the converter is less sensitive to nonlinearities of the operational amplifiers of the integrators.
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