Single-ended v/s Differential inputs

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Most data acquisition systems provides two types of input connections:single ended and a differential input connection. Lets see what is the difference between the both.

Single-ended inputs

 In single ended inputs we connect one wire from each signal source to the data acquistion interface.The measurement is the difference between the signal and ground at that interface.

Advantage: Less number of wires required.
Disadvantage:It suffers from noise injection.Noise can be introduced into the signal.

Differential-ended
  In differential input,two wires from each signal source is connected to the data acquistion interface. One goes to a + input and one goes to a -input.The measurement is the voltage between two individual inputs within a common mode range.

Advantage: Noise is removed.
DisAdvantage: More number of wires are required.

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