Datasheet

UG-224 Evaluation Board User Guide
Rev. 0 | Page 10 of 20
LOW NOISE QUICK TEST
From the AD719x Evaluation Board Software main window,
click the Low Noise Quick Test Hardware Setup button. When
the Low Noise Quick Test Hardware Setup button is clicked, the
user can quickly and easily measure the rms noise of the AD7194.
The software configures the AD7194 to have a gain of 128, an
output data rate of 4.7 Hz, Channel AIN7–AIN8 is selected,
and the reference voltage is set to 5 V (the software assumes that
the 5 V from the USB is used as the reference to the AD7194).
The software also provides instructions on the link positions for
the AD7194 evaluation board. When the instructions given on
each window are completed, click OK. The AD7194 gathers
100 samples, displays the results in the waveform, and analyzes
the data to calculate the maximum conversion, minimum
conversion, and average conversion. The rms noise, peak-to-peak
noise, and resolution are also calculated.
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Figure 10. Low Noise Quick Test Hardware Setup