发明申请
- 专利标题： CURRENT DAC
- 专利标题（中）： 电流DAC
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申请号： US13161742申请日： 2011-06-16
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公开(公告)号： US20120019405A1公开(公告)日： 2012-01-26
- 发明人: Praveen Varma Nadimpalli , Joseph Hubert Colles
- 申请人： Praveen Varma Nadimpalli , Joseph Hubert Colles
- 申请人地址： US NC Greensboro
- 专利权人： RF MICRO DEVICES, INC.
- 当前专利权人： RF MICRO DEVICES, INC.
- 当前专利权人地址： US NC Greensboro
- 主分类号： H03M1/80
- IPC分类号： H03M1/80
摘要：
A current digital-to-analog converter (DAC) is disclosed. The current DAC includes a current reference circuit coupled between a voltage source terminal and a voltage node, wherein the current reference circuit includes a feedback node. A switchable resistor network is communicably coupled to the feedback node of the current reference circuit via a first feedback network that is adapted to equalize a first voltage across the switchable resistor network voltage with a second voltage between the feedback node and the voltage node. A current mirror includes an output node communicably coupled to the switchable resistor network via a second feedback network that is adapted to equalize an output current that flows from the output node with an input current that flows into the switchable resistor network.
公开/授权文献
- US08410966B2 Current DAC 公开/授权日：2013-04-02
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