Texas Instruments ADS8568EVM-PDK, Руководство пользователя, Страница: 14 / 35

Figure 6-2 shows how the software can be started on the start menu or using a desktop icon.
Select EVM GUI
from start menu,
or associated
shortcut
Figure 6-2. Launch the EVM GUI Software
6.2 Jumper Settings for ADS8568EVM
The amplifiers and reference can be configured with jumpers. The amplifier jumpers (JP1-JP8) determine if the
amplifier is used or if an external signal is directly connected to the ADC input. JP9 is used to select either the
internal reference option or external reference option. Take care to make sure that the GUI configuration for the
device reference matches the setting of JP9. The GUI software starts up in the "internal" reference mode, so
make sure the JP9 is in the "INT" position.
Table 6-1. Jumper Settings
Jumper Setting Default Function
JP1 to JP8 wAmp / Bypass wAmp These eight jumpers determine if the amplifier is used to buffer the inputs signals or if it
is bypassed. Choosing wAmp will connect the amplifier between each SMA connector
(J1 to J8) and the ADC input. The default amplifier configuration is inverting (Gain =
-1V/V). The amplifier gain configuration can be adjusted by soldering and de-soldering
different resistors. Choosing the Bypass configuration will connect the SMA connectors
directly to the ADC input.
JP9 EXT / INT INT This jumper will select internal vs external mode on the voltage reference. Using
internal mode will disconnect the external reference. Using external mode will connect
the external REF6025 2.5 V reference to the ADC reference input. Take care to make
sure that the GUI settings for the voltage reference match this jumpers setting.
ADS8568EVM Operation www.ti.com
14 ADS8568EVM-PDK Evaluation Module SBAU193E – JUNE 2011 – REVISED MAY 2021
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