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kinetis k50 family TRIAMP to PGA to ADC, all internally.

Question asked by HECTOR ANDRADE on Mar 12, 2017
Latest reply on Mar 18, 2017 by HECTOR ANDRADE

Hello, I would like to know if using a microcontroller from the kinetis k50 family it would be possible to do the following entirely within the microcontroller:

 

I need to measure light with a photodiode and convert that signal to voltage via the integrated transimpedance amplifier (TRIAMP). Since the light intensity will vary and I want to use the full scale of the ADC, I would then amplify this voltage signal with the integrated PGA (programmable gain amplifier) and then read this with the 16-bit SAR ADC. Please let me know if this would be possible without having to have external connections, since this would save valuable space on the PCB and reduce noise. 

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