UG-851 Datasheet, PDF (8/15 Pages) Analog Devices – EVAL-AD7606SDZ/EVAL-AD7607SDZ/EVAL-AD7608SDZ User Guide

UG-851
EVAL-AD7606SDZ/EVAL-AD7607SDZ/EVAL-AD7608SDZ User Guide
DESCRIPTION OF MAIN WINDOW
The following tools allow user control of the different chart
displays. When the software is launched, the main AD7606
evaluation software window opens (see Figure 12).
The main evaluation software window, as shown in Figure 12,
has the following features:
• Menu bar
• Control buttons
• Configuration display
• Data capture display
Menu Bar
The menu bar, Label 1 in Figure 12, consists of the File and
Help menus.
File Menu
• Save Data. Saves captured data in comma separated values
(CSV) format for future analysis.
• Load Data. Loads previously captured data in CSV format
for analysis.
• Print Front Panel. Prints out the front panel.
• Save As Picture. Saves current tab image as a JPEG file.
• Exit. Exits the program.
Help Menu
• Analog.com. Links to the Analog Devices, Inc., website.
Control Buttons, Drop-Down Boxes, and Indicators
The Configuration, Waveform, Histogram, FFT, and
Summary tabs control which tab is displayed. In each of these
tabs, device configuration and data analysis results can be set
and viewed, respectively.
CONFIGURATION TAB
The configuration tab contains control to configure the AD7606/
AD7606-6/AD7606-4/AD7607/AD7608. Available controls are
sampling rate, oversampling, range, and convert start pulse
width.
Sampling Rate
The sampling rate control (Label 3 in Figure 12) is used to
increase the rate of convert start pulses to the AD7606/
AD7606-6/AD7606-4/AD7607/AD7608. The control accepts
values from 769 Hz to 200,000 Hz. If oversampling is enabled
the maximum limit of sampling is decreases.
Oversampling
The oversampling drop-down menu (Label 4 in Figure 12) is
used to enable and disable oversampling and choose from rates
of oversample by 2, 4, 8, 16, 32, and 64. See the AD7606/
AD7606-6/AD7606-4/AD7607/AD7608 data sheets for more
information on the digital filter profile. The maximum output
data rate of the AD7606/AD7606-6/AD7606-4/AD7607/
AD7608 is limited by the selected oversampling rate.
Range
The 5V / 10 V Range drop-down menu (Label 5 in Figure 12) is
used to alter the signal analysis calculations for the Histogram,
Waveform, and FFT windows. The RANGE pin is not
hardwired to a GPIO pin. The range is selected by inserting
either the R1 or R2 resistor to tie the pin to DGND or VDRIVE.
The default range is ±10 V.
Convst Pulse Width
The Cnvst Pulse Width control (Label 6 in Figure 12) is used to
vary the convert start pulse width and is set to 50 ns by default.
Samples
The user can select the number of samples to be captured from
the # Samples drop-down menu (Label 7 in Figure 12). The
default number of samples is 4096; you are free to change this
as required.
Taking Samples
To initiate a conversion and capture the sample data, click the
Sample button or the Continuous button. Both the Sample and
the Continuous buttons are located at the top of the window
(Label 8 in Figure 12). When you click the Sample button, the
software instructs the EVAL-SDP-CB1Z board to take the required
number of samples at the required frequency from the eval-
uation board. The EVAL-AD7606SDZ/EVAL-AD7606-6SDZ/
EVAL-AD7606-4SDZ/EVAL-AD7607SDZ/EVAL-AD7608SDZ
runs with sampling speeds less than or equal to 200 kSPS. You
can choose the sampling frequency up to this rate and the
number of samples to be taken.
The samples taken are then uploaded and displayed. An FFT
and/or histogram can be calculated and displayed. If you click
the Continuous button, the software repeats the process indefi-
nitely until you click Stop. (The Continuous button switches to
Stop when clicked).
Note that no data appears on the screen if the channels are not
selected. Set the ADC 1 ON/OFF to ADC 8 ON/OFF buttons
in the Part Information section to ON to select the desired
channel.
Rev. 0 | Page 8 of 15