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Knowles iPhone 7 Microphone MEMS: Company Comparison

  • ID: 4316371
  • Report
  • 113 pages
  • System Plus Consulting
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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 an 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.).
Note: Product cover images may vary from those shown
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