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ADG1208 off isolation test circuitry

Question asked by wangfan226 on Jan 8, 2018
Latest reply on Jan 15, 2018 by wangfan226

Hello EZ, 

 

I am reviewing ADG1208's datasheet. Figure 38 Off Isolation, on Page 19, shows that a 50 Ohms resistor added between the transmission line at the source side and source pin. I would like to know the reasoning behind this 50 Ohm resistor in off isolation test. To me, it should not have been there. 

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