TMS320F28377D: TMS320F28377 ADC

kevin.huang_FJXM said:

1. Built in 16 bit ADC, offset voltage in differential application? Temperature drift maladjustment? Gain temperature drift?

Please see the performance characteristics in the datasheet.  These specifications apply across the full range of supported operating conditions.  The effects of temperature drift is expected to differ between devices so there is no official guidance for manual correction.

kevin.huang_FJXM said:

2. What should we pay attention to when using 16 bit ADC? Including peripheral op amp?

The usage conditions in the datasheet should be met:

The TRM also has a Designing an External Reference Circuit section.

Here's an old thread for input conditioning: https://e2e.ti.com/support/microcontrollers/c2000/f/171/t/651443

And here is a recent appnote discussing the modeling of the ADC input: https://www.ti.com/lit/pdf/spract6

Carl,

The performance specified in the datasheet is inclusive of temperature drift so you can use the Min/Max range as a coarse indicator of what the worst-case temperature effects might be.

-Tommy