Figure 2-4 Total Output Referred Error Percentage vs. Input Voltage

Figure 2-5 Total Output Referred Error Voltage vs. Input Voltage

To illustrate, Figure 2-4 and Figure 2-5 show the typical accuracy of the AMC038x devices over temperature. The figures show that the AMC038x delivers better than 0.4% accuracy above 100V and that 0.5V absolute error below 100V input can be achieved over temperature without system level calibration. Saving the calibration routine reduces production cost in implementing precise voltage measuring applications.

Figure 2-6 AMC038x Thermal Results: 12.5MΩ

Additionally, the AMC0381D10 thermal results demonstrate the steady performance of the device family at very high voltages. At 1000V, the θ JA thermal resistance of the package is 107°C/W and expects a temperature increase of 8°C which matches well with lab measurements. This is more than tolerable and confirms safe performance also at elevated ambient temperatures.