Invention Grant
- Patent Title: Analog switch having reduced gate-induced drain leakage
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Application No.: US14659747Application Date: 2015-03-17
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Publication No.: US10236873B2Publication Date: 2019-03-19
- Inventor: Ionut C. Cical , John K. Jennings , Chandrika Durbha
- Applicant: Xilinx, Inc.
- Applicant Address: US CA San Jose
- Assignee: XILINX, INC.
- Current Assignee: XILINX, INC.
- Current Assignee Address: US CA San Jose
- Agent Robert M. Brush
- Main IPC: H03K17/16
- IPC: H03K17/16 ; H03K17/06 ; H03K3/012

Abstract:
In an example, an apparatus includes an analog switch having an n-type metal oxide semiconductor (NMOS) circuit in parallel with a p-type metal oxide semiconductor (PMOS) circuit between a switch input and a switch output. The analog switch is responsive to an enable signal that determines switch state thereof. The NMOS circuit includes a switch N-channel transistor coupled to a buffer N-channel transistor, a gate of the switch N-channel transistor coupled to the enable signal and a gate of the buffer N-channel transistor coupled to a modulated N-channel gate voltage. The PMOS circuit including a switch P-channel transistor coupled to a buffer P-channel transistor, a gate of the switch P-channel transistor coupled to a complement of the enable signal and a gate of the buffer P-channel transistor coupled to a modulated P-channel gate voltage. A control circuit is coupled to the analog switch to provide the modulated N-channel and modulated P-channel gate voltages each of which alternates between a respective supply voltage and a respective gate induced drain leakage (GIDL) mitigation voltage based on the switch state.
Public/Granted literature
- US20160277019A1 ANALOG SWITCH HAVING REDUCED GATE-INDUCED DRAIN LEAKAGE Public/Granted day:2016-09-22
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