ADSxx54EVM-PDK Kit Operation
shows the
Data Monitor
page of the EVM GUI. Configure the device sampling rate and capture
settings by using the
Capture Settings
portion of the
Data Monitor
page. The change in configuration
settings are executed immediately after pressing the
Configure Device
button. The following list describes
the different options available on the
Data Monitor
page.
# of Samples—
This option is used to select the number of samples captured in a block.
The number of samples captured in a block are contiguous. The drop-down menu is used to select
a data block in the range of 1024 samples to 1,048,576 samples per channel. This control provides
a drop-down list for values restricted to 2
n
, where
n
is an integer.
SCLK—
This control sets the clock frequency used by the SPI interface to capture data.
By configuring the SCLK frequency, the data rate of the ADSxx54 is configured. The
ADS8354EVM-PDK software supports SCLK frequencies of 24 MHz, 20 MHz, and 16.2 MHz.
These SCLK frequencies correspond to data rates of 705.8 kSPS, 588 kSPS, and 476.5 kSPS,
respectively. The ADS7854EVM-PDK software supports SCLK frequencies of 34 MHz, 24 MHz, 20
MHz, and 16.2 MHz. These SCLK frequencies correspond to data rates of 1 MSPS, 705.8 kSPS,
588 kSPS, and 476.5kSPS, respectively.
Internal Reference?—
Use this button to select the ADSxx54 device internal reference, or the onboard
REF5025 2.5 external reference.
Program the internal reference settings by navigating into the
ADSxx54 EVM Settings
GUI page, as
described in
of this document.
2*VREF Mode—
This option is used to configure the ADSxx54 in the ±1 × V
ref
or ±2 × V
ref
range mode.
Make sure to configure jumpers JP5 and JP6 appropriately, depending on the mode of operation.
Figure 21. Data Monitor Page
19
SBAU209 – April 2014
ADS8354EVM-PDK and ADS7854EVM-PDK
Copyright © 2014, Texas Instruments Incorporated