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Digital Transmission Isolator

2015-01-09 19:52  
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Digital transmission isolation is important for keeping the digital noise to reach the analog path, that’s the benefit for noise isolation. For electrical isolation, isolating the signal after digitizing is often easier since digital signal is inherently nonlinear, no need for linear device to transfer. You can use the following circuit for many purpose:

 

Digital Transmission Isolator circuit schematic diagram

[Source: National Semiconductor Application Note]







 


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