Invention Application
- Patent Title: ELECTROSTATIC DISCHARGE PROTECTION CIRCUITS FOR RADIO FREQUENCY COMMUNICATION SYSTEMS
- Patent Title (中): 用于无线电频率通信系统的静电放电保护电路
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Application No.: US14797675Application Date: 2015-07-13
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Publication No.: US20160336744A1Publication Date: 2016-11-17
- Inventor: Srivatsan Parthasarathy , Javier Alejandro Salcedo , Rodrigo Carrillo-Ramirez
- Applicant: ANALOG DEVICES, INC.
- Main IPC: H02H9/04
- IPC: H02H9/04

Abstract:
Apparatus and methods for electrostatic discharge (ESD) protection of radio frequency circuits are provided. In certain configurations, an ESD protection circuit includes two or more pairs of field effect transistors (FETs) electrically connected in series between a radio frequency signal pin and a radio frequency ground pin. Each of the two or more pairs of FETs includes a negative ESD protection FET for providing protection from negative polarity ESD events and a positive ESD protection FET for providing protection from positive polarity ESD events. The source and gate of the negative ESD protection FET are electrically connected to one another, and the source and gate of the positive ESD protection FET are electrically connected to one another. Additionally, the drains of the negative and positive ESD protection FETs are electrically connected to one another. The ESD protection circuit exhibits a relatively low capacitance and flat capacitance versus voltage characteristic.
Public/Granted literature
- US09954356B2 Electrostatic discharge protection circuits for radio frequency communication systems Public/Granted day:2018-04-24
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