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AD1868,pdf datasheet (Dual 18-
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2009-09-12
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The AD1868 has two ground pins, designated as AGND (Pin
12) and DGND (Pin 7). The analog ground, AGND, serves as
the “high quality” reference ground for analog signals and as a
return path for the supply current from the analog portion of the
device. The system analog common should be located as close
as possible to Pin 12 to minimize any voltage drop which may
develop between these two points, although the internal circuit
is designed to minimize signal dependence of the analog return
current.
12) and DGND (Pin 7). The analog ground, AGND, serves as
the “high quality” reference ground for analog signals and as a
return path for the supply current from the analog portion of the
device. The system analog common should be located as close
as possible to Pin 12 to minimize any voltage drop which may
develop between these two points, although the internal circuit
is designed to minimize signal dependence of the analog return
current.
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