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About Deviprasad
since
07-22-2023
03-26-2024
Deviprasad
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03-26-2024
07:31 AM
Thank you Robin. out of 57 only 11 sensors have bias instability < 2deg/hr and the average bias instability of of all X and Y axis sensors is at 3.2deg i.e more than typical value 2deg/hr,Please comment on this.
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03-19-2024
11:27 AM
We have purchased 19 BMI088 sensors and all are placed in one pcb.The data is logged for 48hrs at constant temperture of 25deg with 100Hz ODR and Bandwidth of 32Hz.We estimate bias instability of all 57 sensors(19*3 axis) from allan variance plot as below. i. 18 sensors got < 3 deg/hr. ii. 10 sensors got > 5 deg/hr and less than 9 deg/hr. iii.remaining sensors(29) got 3 to 5 deg/hr. but in BMI088 flyer,the bias instability is given as 2 deg/hr but practically we got on an average of 4deg/hr, why? Why the bias instability of BMI088 is not mentioned in its datasheet and why was it is mentioned in BMI088 flyer?
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12-14-2023
02:52 PM
I have sent a mail to Digikey,Mouser and Arrow electronics with multiple remainders but they are keep us waiting and replied as "Working on your request and we will share update soon".Please do the needful.We need bias instability,randomwalk,MTBF and longevity of BMI088 and BMI270 IMU's.Please share the details as early as possible.
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11-15-2023
06:11 AM
Thank you for reply. From the section 4.3,you mean to say that,there is no difference of sensor peroformance,if we give single supply from single voltage regulator to Vdd and Vddio or dual supply from two voltage regulators to supply Vdd and Vddio independently.Is this right? Please provide the max ripple voltage(rms value)or PSRR of Input supply voltage that can be given to BMI088 and BMI270 for accurate performance of the sensor.
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11-13-2023
10:28 AM
The IMU sensor is working on two input voltage supply 1.Vdd - Core supply 2.Vddio - digital I/O supply.My questions are in below. 1.Is it better to supply the Vdd and Vddio seperately from two voltage regulators? 2.Is it better to supply the Vdd and Vddio from single voltage regulator? 3.Which method 1 or 2 is best, to increase the accuracy of IMU sensor? 4.What are power supply specifications(Ex: Output voltage accuracy and PSRR-power supply rejection ratio etc)?
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