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TIDA-00640: Solar panel current and voltage measuring

Part Number: TIDA-00640
Other Parts Discussed in Thread: CC2538, , INA3221, TLV342A, AMC1302, AMC3302

Hey,

I am currently working on a senior design project, and we are tasked to create a PCB that can measure the voltage and current of a solar panel. I was looking for reference designs, and I stumbled upon the TIDA-00640. I was just trying to figure out, how the CC2538 monitors the Current and Voltage? I read the datasheet, but it didn't really give me the detail I was looking for. 

Also, is there any other IC I could use to replace it, still performing the same function, like the INA3221

And, are there other reference designs I could use that contain the components that would help perform the function I'm looking for?

Thank you.