SPRZ412N December 2013 – May 2024 TMS320F28374D , TMS320F28375D , TMS320F28376D , TMS320F28377D , TMS320F28377D-EP , TMS320F28377D-Q1 , TMS320F28378D , TMS320F28379D , TMS320F28379D-Q1
ADC: 12-Bit Switch Resistance
0, A, B
The ADC input model should be used to select the sample-and-hold (S+H) duration for each ADC input. For the revisions affected, the 12-bit input model under-estimates the value of the sampling switch resistance (Ron). A Ron value of 2 kΩ should be used to select the S+H duration for these revisions.
For the revisions affected, the S+H duration should be chosen to account for the additional switch resistance.