Hi Wade, Welcome to the TI E2E Forums! The ADS122C04EVM can be controlled by an external microcontroller by shorting JP1... With JP1 populated, you can now plug in the USB cable to the ADS122C04EVM to power the EVM. The U6 and U7 level-shifters will be tri-stated, allowing you to connect to the ADC signals on the J3 header.
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