Invention Grant
US09473109B2 Apparatus and methods for digital step attenuators with small output glitch
有权
具有小输出毛刺的数字步进衰减器的装置和方法
- Patent Title: Apparatus and methods for digital step attenuators with small output glitch
- Patent Title (中): 具有小输出毛刺的数字步进衰减器的装置和方法
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Application No.: US14704199Application Date: 2015-05-05
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Publication No.: US09473109B2Publication Date: 2016-10-18
- Inventor: Joshua Haeseok Cho , Yunyoung Choi , Bipul Agarwal
- Applicant: Skyworks Solutions, Inc.
- Applicant Address: US MA Woburn
- Assignee: SKYWORKS SOLUTIONS, INC.
- Current Assignee: SKYWORKS SOLUTIONS, INC.
- Current Assignee Address: US MA Woburn
- Agency: Knobbe Martens Olson & Bear LLP
- Main IPC: H03H11/24
- IPC: H03H11/24 ; H03L5/00

Abstract:
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.
Public/Granted literature
- US20150326204A1 APPARATUS AND METHODS FOR DIGITAL STEP ATTENUATORS WITH SMALL OUTPUT GLITCH Public/Granted day:2015-11-12
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