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公开(公告)号：US09065479B2
公开(公告)日：2015-06-23
申请号：US14214180
申请日：2014-03-14
Applicant: Analog Devices Technology
Inventor： Dennis A. Dempsey
Abstract: In an example, a multistring DAC is described and includes at least two DAC stages. Each DAC stage includes a string of impedance elements and a switching network. In one configuration, the multi-string DAC is configured to use the voltage change at terminals of a first string separately to the voltage drop across a first switching network that couples the first and second strings to provide an analog output in response to a digital input to the DAC.
Abstract translation: 在一个示例中，描述了多段DAC并且包括至少两个DAC级。 每个DAC级包括一串阻抗元件和一个交换网络。 在一种配置中，多串DAC被配置为使第一串的端子处的电压变化与跨第一和第二串耦合的第一开关网络的电压降分开，以响应于数字输入而提供模拟输出 到DAC。
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公开(公告)号：US20140266838A1
公开(公告)日：2014-09-18
申请号：US14214180
申请日：2014-03-14
Applicant: ANALOG DEVICES TECHNOLOGY
Inventor： Dennis A. Dempsey
IPC: H03M1/00
Abstract: A multi-string DAC is described and comprises at least two DAC stages. Each DAC stage comprises a string of impedance elements and a switching network. In one configuration, the multi-string DAC is configured to use the voltage change at terminals of a first string separately to the voltage drop across a first switching network that couples the first and second strings to provide an analog output in response to a digital input to the DAC.
Abstract translation: 描述多串DAC并且包括至少两个DAC级。 每个DAC级包括一串阻抗元件和一个交换网络。 在一种配置中，多串DAC被配置为使第一串的端子处的电压变化与跨第一和第二串耦合的第一开关网络的电压降分开，以响应于数字输入而提供模拟输出 到DAC。
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Patent Agency Ranking
3.发明申请TRANSCONDUCTANCE CIRCUIT AND A CURRENT DIGITAL TO ANALOG CONVERTER USING SUCH TRANSCONDUCTANCE CIRCUITS 有权交叉电路和使用这种交叉电路的模拟转换器的电流数字公开(公告)号：US20140340150A1
公开(公告)日：2014-11-20
申请号：US14185701
申请日：2014-02-20
Applicant: ANALOG DEVICES TECHNOLOGY
Inventor： Dennis A. Dempsey , Sean Brennan , Colin Lyden , John Jude O'Donnell
IPC: H03F3/45
CPC classification number: H03F1/223 , H03F3/45475 , H03F2200/156 , H03F2203/45116 , H03F2203/45528 , H03F2203/45536 , H03F2203/45696 , H03M1/765 , H03M1/808
Abstract: An example transconductance circuit is provided in accordance with one embodiment. The transconductance circuit can comprise: an output node; at least one transistor; a variable resistance; and a differential amplifier; wherein the at least one transistor and the variable resistance are in series connection with the output node, an output of the differential amplifier is connected to a control node of the at least one transistor, a first input of the amplifier is responsive to an input signal, and a second input of the amplifier is responsive to a voltage across the variable resistance. Such a circuit may overcome noise problems in transconductance circuits which operate over a wide range of input signals with a fixed resistor in series with the at least one transistor.
Abstract translation: 根据一个实施例提供了示例性跨导电路。 跨导电路可以包括：输出节点; 至少一个晶体管; 可变电阻; 和差分放大器; 其中所述至少一个晶体管和所述可变电阻与所述输出节点串联连接，所述差分放大器的输出端连接到所述至少一个晶体管的控制节点，所述放大器的第一输入端响应于输入信号 并且放大器的第二输入响应可变电阻两端的电压。 这种电路可以克服在具有与至少一个晶体管串联的固定电阻器的宽范围的输入信号上工作的跨导电路中的噪声问题。
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4.发明授权公开(公告)号：US09203350B2
公开(公告)日：2015-12-01
申请号：US14185701
申请日：2014-02-20
Applicant: ANALOG DEVICES TECHNOLOGY
Inventor： Dennis A. Dempsey , Sean Brennan , Colin Lyden , John Jude O'Donnell
CPC classification number: H03F1/223 , H03F3/45475 , H03F2200/156 , H03F2203/45116 , H03F2203/45528 , H03F2203/45536 , H03F2203/45696 , H03M1/765 , H03M1/808
Abstract: An example transconductance circuit is provided in accordance with one embodiment. The transconductance circuit can comprise: an output node; at least one transistor; a variable resistance; and a differential amplifier; wherein the at least one transistor and the variable resistance are in series connection with the output node, an output of the differential amplifier is connected to a control node of the at least one transistor, a first input of the amplifier is responsive to an input signal, and a second input of the amplifier is responsive to a voltage across the variable resistance. Such a circuit may overcome noise problems in transconductance circuits which operate over a wide range of input signals with a fixed resistor in series with the at least one transistor.
Abstract translation: 根据一个实施例提供了示例性跨导电路。 跨导电路可以包括：输出节点; 至少一个晶体管; 可变电阻; 和差分放大器; 其中所述至少一个晶体管和所述可变电阻与所述输出节点串联连接，所述差分放大器的输出端连接到所述至少一个晶体管的控制节点，所述放大器的第一输入端响应于输入信号 并且放大器的第二输入响应可变电阻两端的电压。 这种电路可以克服在具有与至少一个晶体管串联的固定电阻器的宽范围的输入信号上工作的跨导电路中的噪声问题。
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公开(公告)号：US09077376B2
公开(公告)日：2015-07-07
申请号：US14214405
申请日：2014-03-14
Applicant: Analog Devices Technology
Inventor： Dennis A. Dempsey
Abstract: A multi-string DAC is described and comprises at least two DAC stages. Each DAC stage comprises a string of impedance elements and a switching network. A control loop is provided to control the Ron of the switching network and provide code dependent control of switches in a DAC switching network.
Abstract translation: 描述多串DAC并且包括至少两个DAC级。 每个DAC级包括一串阻抗元件和一个交换网络。 提供控制回路来控制交换网络的Ron，并提供DAC交换网络中交换机的代码相关控制。
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公开(公告)号：US20140313066A1
公开(公告)日：2014-10-23
申请号：US14214341
申请日：2014-03-14
Applicant: ANALOG DEVICES TECHNOLOGY
Inventor： Dennis A. Dempsey
IPC: H03M1/68
Abstract: A multi-string DAC is described and comprises at least two DAC stages. Each DAC stage comprises a string of impedance elements and a switching network. In one configuration, the DAC comprises a first and second switching network, the second switching network providing multiple switched paths which compensate for impedance effects of the second string and provides multiple state changes at the output node of the DAC.
Abstract translation: 描述多串DAC并且包括至少两个DAC级。 每个DAC级包括一串阻抗元件和一个交换网络。 在一种配置中，DAC包括第一和第二交换网络，第二交换网络提供多个交换路径，其补偿第二串的阻抗效应，并在DAC的输出节点处提供多个状态改变。
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7.发明申请公开(公告)号：US20140285369A1
公开(公告)日：2014-09-25
申请号：US14214405
申请日：2014-03-14
Applicant: ANALOG DEVICES TECHNOLOGY
Inventor： Dennis A. Dempsey
IPC: H03M1/66
Abstract: A multi-string DAC is described and comprises at least two DAC stages. Each DAC stage comprises a string of impedance elements and a switching network. A control loop is provided to control the Ron of the switching network and provide code dependent control of switches in a DAC switching network.
Abstract translation: 描述多串DAC并且包括至少两个DAC级。 每个DAC级包括一串阻抗元件和一个交换网络。 提供控制回路来控制交换网络的Ron，并提供DAC交换网络中交换机的代码相关控制。
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