Invention Grant
US08653999B1 Current steering DAC, a video adapter including a current steering DAC, and a video circuit including a current steering DAC
有权
电流转向DAC,包括电流转向DAC的视频适配器和包括电流转向DAC的视频电路
- Patent Title: Current steering DAC, a video adapter including a current steering DAC, and a video circuit including a current steering DAC
- Patent Title (中): 电流转向DAC,包括电流转向DAC的视频适配器和包括电流转向DAC的视频电路
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Application No.: US13604525Application Date: 2012-09-05
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Publication No.: US08653999B1Publication Date: 2014-02-18
- Inventor: Rene Verlinden
- Applicant: Rene Verlinden
- Applicant Address: NL Eindhoven
- Assignee: NXP B.V.
- Current Assignee: NXP B.V.
- Current Assignee Address: NL Eindhoven
- Main IPC: H03M1/66
- IPC: H03M1/66

Abstract:
A current steering Digital-to-Analog Converter (DAC), a video adapter including a current steering DAC, and a video circuit including a current steering DAC are described. In one embodiment, a current steering DAC includes multiple DAC unit cells that are connected in parallel with each other. Each of the DAC unit cells includes three output switches connected to a current source. The three output switches are configured to form two differential pairs of switches that are placed in parallel with each other and share a negative output switch of the three output switches. The current steering DAC also includes at least one switch control circuit configured to receive digital input data and to control the three output switches of each of the DAC unit cells to generate differential analog output data based on the digital input data and a current from the current source. Other embodiments are also described.
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