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Is it necessary to separate analog and a digital GND pins?

Latest Updated:08/01/2005

Question:

There are both an analog and a digital GND pins, but in APPLICATION CIRCUIT EXAMPLE of the data sheet, they are connected with the same ground line together.
Is it necessary to separate one from the other?

Answer:

No, it is not necessary to separate them, as shown in the application circuit example.
This is provided for the case when the customer wishes to perform board design taking noise into consideration.
The digital and analog grounds can be treated as one line without problem.
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