公开(公告)号：US08410966B2

公开(公告)日：2013-04-02

申请号：US13161742

申请日：2011-06-16

申请人： Praveen Varma Nadimpalli ,  Joseph Hubert Colles

发明人： Praveen Varma Nadimpalli ,  Joseph Hubert Colles

IPC分类号： H03M1/80

CPC分类号： H03F1/30 ,  G05F1/575 ,  H03F3/189 ,  H03F3/24 ,  H03F2200/447 ,  H03F2200/555 ,  H03F2200/78

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.

摘要翻译： 公开了一种当前的数模转换器（DAC）。 电流DAC包括耦合在电压源端子和电压节点之间的电流参考电路，其中电流参考电路包括反馈节点。 可切换电阻网络经由第一反馈网络可通信地耦合到电流参考电路的反馈节点，该第一反馈网络适于使可切换电阻器网络电压上的第一电压与反馈节点与电压节点之间的第二电压相等。 电流镜包括经由第二反馈网络可通信地耦合到可切换电阻器网络的输出节点，其适于使从输出节点流出的输出电流与流入可切换电阻器网络的输入电流相等。

公开(公告)号：US20120019405A1

公开(公告)日：2012-01-26

申请号：US13161742

申请日：2011-06-16

申请人： Praveen Varma Nadimpalli ,  Joseph Hubert Colles

发明人： Praveen Varma Nadimpalli ,  Joseph Hubert Colles

IPC分类号： H03M1/80

CPC分类号： H03F1/30 ,  G05F1/575 ,  H03F3/189 ,  H03F3/24 ,  H03F2200/447 ,  H03F2200/555 ,  H03F2200/78

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.

摘要翻译： 公开了一种当前的数模转换器（DAC）。 电流DAC包括耦合在电压源端子和电压节点之间的电流参考电路，其中电流参考电路包括反馈节点。 可切换电阻网络经由第一反馈网络可通信地耦合到电流参考电路的反馈节点，该第一反馈网络适于使可切换电阻器网络电压上的第一电压与反馈节点与电压节点之间的第二电压相等。 电流镜包括经由第二反馈网络可通信地耦合到可切换电阻器网络的输出节点，其适于使从输出节点流出的输出电流与流入可切换电阻器网络的输入电流相等。