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公开(公告)号:US08922412B1
公开(公告)日:2014-12-30
申请号:US13874040
申请日:2013-04-30
申请人: Xilinx, Inc.
IPC分类号: H03M1/66
CPC分类号: H03M1/0604 , H03M1/662 , H03M1/742
摘要: An apparatus relating generally to digital-to-analog conversion is disclosed. In such an apparatus, a digital-to-analog converter (“DAC”) device includes a source DAC and a sink DAC selectively coupled to one another. The source DAC provides a first bias to the sink DAC in a sink mode, and the sink DAC provides a second bias to the source DAC in a source mode.
摘要翻译: 公开了一般涉及数模转换的装置。 在这种装置中,数模转换器(“DAC”)装置包括一个选择性地耦合到彼此的源DAC和信宿DAC。 源DAC在宿模式中向宿DAC提供第一偏置,并且宿DAC在源模式中向源DAC提供第二偏置。
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2.
公开(公告)号:US09419636B1
公开(公告)日:2016-08-16
申请号:US14682868
申请日:2015-04-09
申请人: Xilinx, Inc.
CPC分类号: H03M1/66 , H03M1/0836 , H03M1/747
摘要: In one example, a current steering circuit includes an output transistor pair responsive to a first gate bias voltage. The current steering circuit further includes a first switch comprising a first source-coupled transistor pair coupled to the output transistor pair and responsive to a first differential gate voltage, and a second switch comprising a second source-coupled transistor pair coupled to the output transistor pair and responsive to a second differential gate voltage. The current steering circuit further includes a current source configured to source a bias current. The current steering circuit further includes a third switch comprising a third source-coupled transistor pair coupled between the current source and each of the first switch and the second switch, the third source-coupled transistor pair responsive to a third differential gate voltage.
摘要翻译: 在一个示例中,电流控制电路包括响应于第一栅极偏置电压的输出晶体管对。 电流转向电路还包括第一开关,其包括耦合到输出晶体管对并响应于第一差分栅极电压的第一源极耦合晶体管对,以及包括耦合到输出晶体管对的第二源极耦合晶体管对的第二开关 并响应于第二差分栅极电压。 电流转向电路还包括被配置为馈送偏置电流的电流源。 电流转向电路还包括第三开关,其包括耦合在电流源与第一开关和第二开关中的每一个之间的第三源极耦合晶体管对,第三源极耦合晶体管对响应第三差分栅极电压。
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公开(公告)号:US08836409B1
公开(公告)日:2014-09-16
申请号:US13792949
申请日:2013-03-11
申请人: Xilinx, Inc.
发明人: Edward Cullen , April M. Graham , Ionut C. Cical
IPC分类号: H03K17/687
CPC分类号: H03K17/08122 , H03K17/06 , H03K2017/066 , H03K2217/0054
摘要: An apparatus includes: a switch having a first transistor, the first transistor having a gate, wherein the switch is connected between a first pad and a second pad; and a first biasing circuit coupled to the gate of the first transistor, wherein the first biasing circuit is configured for outputting a first voltage, the first voltage being the lowest one of (1) a voltage of the first pad, (2) a voltage of the second pad, and (3) a ground voltage; wherein the gate of the first transistor is driven by the first voltage from the first biasing circuit in response to an enable signal being set for configuring the switch to be off.
摘要翻译: 一种装置包括:具有第一晶体管的开关,所述第一晶体管具有栅极,其中所述开关连接在第一焊盘和第二焊盘之间; 以及耦合到所述第一晶体管的栅极的第一偏置电路,其中所述第一偏置电路被配置为输出第一电压,所述第一电压是(1)第一焊盘的电压中的最低电压,(2) 的第二焊盘,(3)接地电压; 其中响应于将所述开关配置为断开而设置的使能信号,来自所述第一偏置电路的所述第一晶体管的栅极被所述第一电压驱动。
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