Hello,
I have a project to measure the IV curves of new concept of solar cells in the space environment. Your support to recommend for me a precision amplifier to measure the current output of the cell will be highly appreciated.
MSP340 Microcontroller is the heart of the system. Taxes Instrumentation Company provides radiation hardened microcontroller which is MSP430FR5969-SP. This model includes an Analog to Digital Converter (ADC) and a Controller Area Network (CAN) embedded. The first draft of the circuit design is to control a Precision Current Sink (PCS) using one of the MSP340 microcontroller. Basically, the PCS will apply voltage across the cell, and sweep over the whole IV curve. Therefore, the MSP340 will control the applied voltage and the sweeping process. Once a solar irradiance strike the cell, a current will be generated at a given voltage data point. Cells temperature at the given voltage data point will be measured, so that the final reading will be I - V - T. The generated current will flow over a Precision Instrumentation Amplifier (PIA), and it will read the current in an analog form. To digitize it, Analog to digital Converter (ADC) will be needed. The digitized reading through the PIA will be sent to the onboard computer using a Controller Area Network (CAN). The onboard computer will then send the data (digitized reading of the current, voltage across the cell, and the temperature) to earth.
1- what type of amplifiers can TI offer for the application above? It should be compatible with the MSP430FR5969-SP microcontroller and its launchpad, in particular the ADC included?
2- Do you also suggest a shunt resistor from TI?
Thank you in advance.
Ghanim