Invention Grant
- Patent Title: Analog multiplexer
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Application No.: US15340423Application Date: 2016-11-01
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Publication No.: US10200041B2Publication Date: 2019-02-05
- Inventor: Jeremy R. Gorbold , Christian Steffen Birk , Gerard Mora Puchalt , Colin Charles Price , Michael C. W. Coln , Mahesh Madhavan Kumbaranthodiyil
- Applicant: Jeremy R. Gorbold , Christian Steffen Birk , Gerard Mora Puchalt , Colin Charles Price , Michael C. W. Coln , Mahesh Madhavan Kumbaranthodiyil
- Applicant Address: BM Hamilton
- Assignee: Analog Devices Global
- Current Assignee: Analog Devices Global
- Current Assignee Address: BM Hamilton
- Agency: Schwegman Lundberg & Woessner, P.A.
- Main IPC: H03K17/00
- IPC: H03K17/00 ; H03K19/0185 ; H03K17/693

Abstract:
An analog multiplexer may be used for sampling an input voltage that is capable of having a higher voltage level than an upper supply voltage. The analog multiplexer includes a plurality of input switch circuits and a shorting switch circuit. The plurality of input switch circuits include n-type or p-type laterally diffused field effect transistors (NLDFETs or PLDFETs). At least one of the input switch circuits includes a level shifting switch circuit that is able to sample an input voltage that is greater than the upper supply voltage for the multiplexer. A shorting switch circuit, at an output of the multiplexer, includes a capacitively coupled gate drive circuit and is configured to short a first differential output to a second differential output after the input voltage is sampled.
Public/Granted literature
- US20180123591A1 ANALOG MULTIPLEXER Public/Granted day:2018-05-03
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