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TLC5540: ADC Conversion Issue

Part Number: TLC5540

Hi Team

I am using TLC5540 part in my design. Schematics is as shown in below image.

I fed the Analog input to pin 19 of two ADCs. I probed the digital data in logic analyzer and exported the data to excel sheet. When I plot the data in charts I am seeing all the digital outputs are getting HIGH all of a sudden without any input and reference voltage change. Please refer the attached zip file results and provide the feedback.

TLC5540_TI_ForForum.zip