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crwdns2933797:0Andrew Bookholtcrwdnd2933797:0crwdne2933797:0
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| - | [* 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. |
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| - | [* black] Feedback from the sensing capacitive plates attached to the oscillating plates within the gyroscope is fed to an [link|http://en.wikipedia.org/wiki/Application-specific_integrated_circuit|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 V654A [link|http://en.wikipedia.org/wiki/Application-specific_integrated_circuit|ASIC] die (seen on the left) converts the tiny capacitive signals from the MEMS oscillator die into a digital signal which is fed into the iPhone 4. |
| [* 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. |