SBOS820A September 2019 – June 2020 TMCS1100
The TMCS1100 includes a proprietary temperature compensation technique which results in significantly improved parametric drift across the full temperature range. This compensation technique accounts for changes in ambient temperature, self-heating, and package stress. A zero-drift signal chain architecture and Hall sensor temperature stabilization methods enable stable sensitivity and minimize offset errors across temperature, and drastically improves system-level performance across the required operating conditions.
Figure 36shows the offset error across the full device ambient temperature range. Figure 37 shows the typical sensitivity. There are no other external components introducing errors sources; therefore, the high intrinsic accuracy and stability over temperature directly translates to system-level performance. As a result of this high precision, even a system with no calibration can reach < 1% of total error current-sensing capability.