- 专利标题: Apparatus and methods for digital step attenuators with small output glitch
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申请号: US15265160申请日: 2016-09-14
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公开(公告)号: US09787285B2公开(公告)日: 2017-10-10
- 发明人: Joshua Haeseok Cho , Yunyoung Choi , Bipul Agarwal
- 申请人: SKYWORKS SOLUTIONS, INC.
- 申请人地址: US MA Woburn
- 专利权人: SKYWORKS SOLUTIONS, INC.
- 当前专利权人: SKYWORKS SOLUTIONS, INC.
- 当前专利权人地址: US MA Woburn
- 代理机构: Knobbe Martens Olson & Bear LLP
- 主分类号: H03H11/24
- IPC分类号: H03H11/24 ; H04M1/02
摘要:
Apparatus and methods for digital step attenuators are provided herein. In certain configurations, a DSA includes a plurality of DSA stages that can be set in an attenuation mode or in a bypass mode using a plurality of switching circuits. A first switching circuit of the plurality of switching circuits includes a field effect transistor (FET) switch, a gate resistor, one or more gate resistor bypass switches, and a pulse generation circuit. The gate resistor is electrically connected between a switch control input and a gate of the FET switch, and a switch control signal can be provided to the switch control input to turn on or off the FET switch. In response to detecting a rising and/or falling edge of the switch control signal, the pulse generation circuit can control the one or more gate resistor bypass switches to bypass the gate resistor.
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