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Fix Your Stuff

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Changes to Step #4

Edit by Andrew Bookholt

Pending approval


Step Lines

[* black] The V654A ASIC die (seen on the left) converts the tiny capacitive signals from the MEMS die into a digital signal which is provided to the iPhone 4.
[* black] Feedback from the sensing capacitive plates attached to the oscillating plates within the gyroscope is fed to an [link||ASIC] that multiplies the raw feedback signal by the sensitivty, or gain, of the unit, which is the ratio of output to input of the sensor.
[* black] The sensitivity of MEMS gyroscopes is usually in mV/dps (or degrees per second), so the output of the oscillator (in mV) divided by the sensitivity (mV/dps) provides the angular rate applied to the package, in degrees per second.
[* black] This data is used, for example, to turn the steering wheel of a car or to change the course of an aircraft in any of the iPhone 4's games.

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