2nd Gen. of InvenSense IMU - The Smallest 9-Axis IMU with only 9mm² footprint 40% area decrease of the gyro & magneto through key changes of the Nasiri process
For its second generation of 9 DoF sensor, InvenSense manages to integrate a 6-Axis Accelerometer/Gyroscope and a 3-Axis Magnetometer in a cost effective QFN package of only 3x3mm (45% footprint reduction compared to the previous generation).
This package reduction has been made possible thanks to a new design of the 3-axis gyroscope which now uses a single structure vibratory compared to three different structures for the previous generation of gyros. This new design results in a shrink of 40% of the 3-axis gyro area. The second benefice of this new design is that Nasiri process has been changed: cavities which were traditionally etched in the ASIC to allow MEMS structures moving are no longer used, thus resulting in cost reduction.
The MPU-9250 also integrates a new 3-Axis magnetometer from AKM, the AK8963, which features almost 40% size reduction compared to previous generation and sensitivity improvement with 0.15µT/LSB.
More information on that report at http://www.i-micronews.com/reports/InvenSense-MPU-9250-9-Axis-MEMS-IMU/1/426/
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DISCLAIMER : System Plus Consulting provides cost studies based on its knowledge of the manufacturing and selling prices of electronic components and systems. The given values are realistic estimates which do not bind System Plus Consulting nor the manufacturers quoted in the report. System Plus Consulting is in no case responsible for the consequences related to the use which is made of the contents of this report. The quoted trademarks are property of their owners.
The reverse costing analysis is conducted in 3 phases:
Teardown analysis
• Package is analyzed and measured• The dies are extracted in order to get overall data: dimensions, main blocks, pad number and pin out, die marking• Setup of the manufacturing process.
Costing analysis
• Setup of the manufacturing environment• Cost simulation of the process steps
Selling price analysis
• Supply chain analysis• Analysis of the selling price
Reverse costing analysis represents the best cost/price evaluation given the publically available data, and estimates completed by industry experts.
Given the hypothesis presented in this analysis, the major sources of correction would lead to a +/- 10% correction on the manufacturing cost (if all parameters are cumulated)
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