Evaluating Performance with the ADCPro Software
11
Evaluating Performance with the ADCPro Software
The evaluation software is based on ADCPro, a program that operates using a variety of plug-ins. (The
ADS1282EVM plug-in is installed as described in the installation section,
To use ADCPro, load an EVM plug-in and a test plug-in. To load an EVM plug-in, select it from the EVM
menu. To load a test plug-in, select it from the Test menu. To unload a plug-in, select the Unload option
from the corresponding menu.
Only one of each kind of plug-in can be loaded at a time. If you select a different plug-in, the previous
plug-in is unloaded.
11.1 Using the ADS1282EVM-PDK Plug-in
The ADS1282EVM-PDK plug-in for ADCPro provides complete control over all settings of the ADS1282. It
consists of a tabbed interface (see
), with different functions available on different tabs. These
controls are described in this section.
You can adjust the ADS1282EVM settings when you are not acquiring data. During acquisition, all
controls are disabled and settings may not be changed.
When you change a setting on the ADS1282EVM plug-in, the setting immediately updates on the board.
Settings on the ADS1282EVM correspond to settings described in the ADS1282 product data sheet; see
the
(available for download at
) for details.
11.1.1
Controls Tab
ADCPro can receive data from the ADS1282 at five different data rates. The data rate is controlled by the
DR[2:0] Register control (shown in
). The data rate choices are determined by the digital filter
that is used. The setting of the register selects the data rate and displays it to the right of the screen.
Figure 22. Data Rate Select
The PGA found on the ADS1282 can be set through ADCPro. The Gain control is used to set binary gains
by setting the register bits accordingly (as shown in
Figure 23. PGA Gain Select
ADCPro can access to the Chop control. Chop will take two readings, a normal reading and one with the
input pins switched. It then averages the two readings for a final output result. Doing this averaging
removes the offset, offset drift, and reduces the noise reading. See the
for
more information on Chop.
The Operating Mode control allows optimization of noise and power. Either Low Power or High
Resolution can be selected.
21
SBAU144C
–
March 2009
–
Revised May 2011
ADS1282EVM and ADS1282EVM-PDK User
'
s Guide
Copyright
©
2009
–
2011, Texas Instruments Incorporated
