发明授权
- 专利标题: Current steering digital-to-analog converter
- 专利标题(中): 电流转向数模转换器
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申请号: US12560602申请日: 2009-09-16
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公开(公告)号: US07994957B2公开(公告)日: 2011-08-09
- 发明人: John Jude O'Donnell , Frederick Carnegie Thompson
- 申请人: John Jude O'Donnell , Frederick Carnegie Thompson
- 申请人地址: SG
- 专利权人: MediaTek Singapore Pte. Ltd.
- 当前专利权人: MediaTek Singapore Pte. Ltd.
- 当前专利权人地址: SG
- 代理机构: Fish & Richardson P.C.
- 主分类号: H03M1/66
- IPC分类号: H03M1/66
摘要:
A digital to analog converter (DAC) module receives an input digital signal having a first data rate and is associated with a first frequency, the DAC module also receiving a synchronization signal having a second frequency that is higher than the first frequency. The DAC module includes an up-sampling circuit to generate a first digital signal having bit values of the input digital signal alternating with zero values, the first digital signal having a data rate that is higher than the first data rate; a delay circuit to delay the first digital signal by a time period to generate a second digital signal; a first DAC cell to generate a first analog signal based on the first digital signal, the first DAC cell being synchronized by the synchronization signal; a second DAC cell to generate a second analog signal based on the second digital signal, the second DAC cell being synchronized by the synchronization signal; and an adder to sum the first and second analog signals and generate a third analog signal.
公开/授权文献
- US20100328124A1 CURRENT STEERING DIGITAL-TO-ANALOG CONVERTER 公开/授权日:2010-12-30
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