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IPhone 4

The iPhone 4 is a smartphone that was designed and marketed by Apple Inc. Following a number of notable leaks, the iPhone 4 was first unveiled on June

apple-iphone-7-plus-mems-microphones-from-knowles-stmicroelectronics-and-goertekinfineonApple iPhone 7 Plus: MEMS Microphones from Knowles, STMicroelectronics, and Goertek-Infineon 2016 teardown rever…
from Yole_Developpement, ago in
Introducing a brand-new design and process from three of Apple’s main MEMS microphone suppliers. The MEMS microphone market has enjoyed continuous growth since its debut, and Yole Développement forecasts a 10% CAGR from 2015 – 2021 due to increased smartphone and home appliance integration. Indeed, MEMS microphones’ penetration rate in smartphones is already close to 100%. The Apple iPhone 7 and 7 Plus each have four MEMS microphones: a front-facing top microphone, two front-facing bottom microphones and a rear-facing top microphone.  In every iPhone 7 Plus we examined, we observed a Knowles design win for the rear-facing top microphone and a STMicroelectronics design win for the front-facing top microphone. The two front-facing bottom microphones were sourced by either Knowles or Goertek. On the process side, we observed for the first time full in-house manufacturing by STMicroelectronics, which now makes the MEMS die internally without relying on OMRON. This new integration confirms  a new manufacturing process developed by STMicroelectronics. Goertek, which still relies on Infineon for die manufacturing, integrates the latest Infineon MEMS microphone process, which delivers a differential MEMS microphone using a dual backplate technology. The third manufacturer, Knowles, made strategic technical choices which allowed it to have the smallest MEMS die. Lastly, all four microphones share the same Apple-specific package dimensions, but with different internal structures (number of substrate metal layers, embedded capacitance, etc.). These three reports can be purchased separately or all together in order to compare the technology and pricing of these three key Apple iPhone suppliers. In fact, the three-report bundle includes a complete comparison of the three components. More information on that report at http://www.i-micronews.com/reports.html

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