SNAS845 august 2023 REF35-Q1
PRODUCTION DATA
Thermal hysteresis is measured with the REF35-Q1 soldered to a PCB, similar to a real-world application. Thermal hysteresis for the device is defined as the change in output voltage after operating the device at 25°C, cycling the device through the specified temperature range, and returning to 25°C. The PCB was baked at 150°C for 30 minutes before thermal hysteresis was measured. Use Equation 2 to calculate the thermal hysteresis.
where
Figure 8-5 and Figure 8-6 show the typical thermal hysteresis distribution across various temperature ranges in two cycles.