ADSxx53EVM-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 ADS7853 is configured.
The ADS7853EVM-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 476.5 kSPS, respectively.
The ADS8353EVM-PDK software supports SCLK frequencies of 20 MHz, 16.2 MHz, and 10MHz .
These SCLK frequencies correspond to data rates of 606 kSPS, 490.9 kSPS, and 303.03 kSPS,
respectively
Internal Reference?—
Use this button to select the ADSxx53 device internal reference, or the onboard
REF5025 2.5-V external reference.
Program the internal reference settings by navigating into the
ADSxx53 EVM Settings
GUI page, as
described in
of this document.
2*VREF Mode—
This option is used to configure the ADSxx53 to the 0 to 1 × V
ref
range or the 0 to 2 ×
V
ref
range.
Make sure to configure jumpers JP3 and JP4 appropriately, depending on the mode of operation.
Figure 26. Data Monitor Page
23
SBAU210A – June 2014 – Revised August 2014
ADS8353EVM-PDK and ADS7853EVM-PDK
Copyright © 2014, Texas Instruments Incorporated