Complex sentence: Good engineering practice calls to use external loads (external R, L, C) that will force the necessary currents, this practice avoids loading differences due to different operation schemes of the chip and operation trimming of the analog parts.
Split into simpler sentences: Good engineering practice calls for the use of external loads (external R, L, C) to force the necessary currents. This practice avoids loading differences due to the chip's different operational schemes and operation trimming of its analog parts.