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AD625,pdf datasheet (Instrumen
消耗积分:3 |
格式:rar |
大小:463 |
2009-08-27
欲望都市
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In order to isolate low level analog signals from a noisy digital
environment, many data-acquisition components have two or
more ground pins. These grounds must eventually be tied together
at one point. It would be convenient to use a single
ground line, however, current through ground wires and pc runs
of the circuit card can cause hundreds of millivolts of error.
Therefore, separate ground returns should be provided to minimize
the current flow from the sensitive points to the system
ground (see Figure 34). Since the AD625 output voltage is
developed with respect to the potential on the reference terminal,
it can solve many grounding problems.
environment, many data-acquisition components have two or
more ground pins. These grounds must eventually be tied together
at one point. It would be convenient to use a single
ground line, however, current through ground wires and pc runs
of the circuit card can cause hundreds of millivolts of error.
Therefore, separate ground returns should be provided to minimize
the current flow from the sensitive points to the system
ground (see Figure 34). Since the AD625 output voltage is
developed with respect to the potential on the reference terminal,
it can solve many grounding problems.
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