PGA300: Verification of results from PGA300 Device Calibration

Hi user5359235!

Our PGA expert is out of office until Monday next week.  We will get back to you once he returns to the office.

Hello,

I did notice one small mistake in the calculations, shown below:

However, after fixing this error the result of the calculation is still not the expected value of 0x653. I will need to look into this further and get back to you later this week.

Regards,

Hello,

Thank you for checking calculation results. I didn't notice that mistake.
I'm looking forwad to getting a new answer from you and resolving this equation.

Regards,

Hello,

I would like to know your progress of this problem. Could you tell me?

Regards,

Hello,

I'm in trouble about this calculation problem. This calculation results are needed to compare with GUI results and results of "PGAcoeffgen16.dll" which I think PGA300 GUI uses to calculate these coefficients. Curently, I can't identify these coefficient results are correct or not yet. I hope to get this problrem solved as soon as possible. Could you please give me an answer?

Regards,

Hello,

Thank you for your patience. The GUI does not actually use the PGAcoeffgen16.dll file. The coefficient calculation in the GUI is actually hardcoded into the GUI source file. The results should be the same in most cases, but since the code is not exactly the same the GUI may not produce an output for all cases. I am in the process of investigating why the GUI is responding in this way. Are you able to use the dll to calculate coefficients for this particular case? 

Regards,

Hello,

I didn't know the GUI doesn't use the dll. I'm going to use the dll for our device assembly line to compensate temperature effects. Incidentally, how is the excel file's calcultaion problem? Have you found some mistakes in this equation?

Regards,

Hello,

How is your progress of excel's calculation problem?

Regards,

Hello,

I have not found a mistake in your implementation of the formulas from the datasheet in your excel sheet. I am checking now to understand if there is potentially an error in the equation shown in the datasheet.

Have you had a chance to test this case using the dll? Do you get the same output as the EVM GUI?

Regards,

Hello,

Yes, I compared results between GUI and DLL about 4P4T and 3P3T. In that time, 4P4T results were absolutely muched between GUI and DLL, but 3P3T results were not same between GUI and DLL.

In 4P4T, if GUI results were success, DLL output coefficients are completely same with GUI coeficients. If GUI results were error, DLL results were same. 

In 3P3T, if GUI results were success, DLL results were sometimes error. If GUI results were error, DLL results were also error, so GUI error situation is always same with DLL. 

Regards,