Datasheet

UG-222 Evaluation Board User Guide
Rev. 0 | Page 10 of 20
LOW NOISE QUICK TEST
09551-010
Figure 10. Low Noise Quick Test
When the Low Noise Quick Test button in the main window
(see Figure 6) is clicked, you can quickly and easily measure the
rms noise of the AD7190/AD7192. The software configures the
AD7190/AD7192 to have a gain of 128 and an output data rate
of 4.7 Hz, Channel AIN1/AIN2 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 AD7190/AD7192.) The
software also provides instructions on the link positions for the
AD7190/AD7192 evaluation board. When the instructions
given in each window are completed, click the OK button. The
AD7190/AD7192 software 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.