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ASM330LHB Gyroscope bias changed abnormally

Deviprasad Bokkisam
Associate II

Hi,
We are using 4 ASM330LHB in our application. We have placed 4IMU's on PCB. We put the PCB in temperature chamber to observe the sensor behaviour during the temperature variation(cooling) with 1deg/min from 30 to 60 to -20.During this test all sensors in static only. During cooling, the sensor bias or readings changed significantly as shown in attached file. Why sensors readings changed significantly?.

Each plot has 4gyroscope readings. In attached file The last 3Plots are zoomed version of first 3plots respectively.

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