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Friday, March 24, 2017

Inside ToF Proximity Sensor of iPhone 7 Plus

Systemplus Consulting publishes reverse engineering report of ST SPAD-based proximity sensor inside Apple iPhone 7 Plus. "The custom Apple device measures 2.80 mm x 2.40 mm, half the size of the rest of STMicroelectronics’s portfolio." VCSEL is integrated on top of the SPAD sensor chip:

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4 comments:

  1. AnonymousMarch 26, 2017 at 1:29 PM

    Very interesting, a heat source mounted on a cmos chip...

    ReplyDelete
  2. AnonymousMarch 27, 2017 at 11:02 AM

    The VCSEL is in pulsed mode operation so the heat of this ~2-6mW VCSEL is tiny, though so is the whole thing but I doubt it's an issue. Besides, they probably have 3+ metal layers underneath for heat sinking and the CMOS chip is bonded to a larger heatsink package.

    ReplyDelete
  3. AnonymousMarch 27, 2017 at 12:14 PM

    anybody knows where is the VCSEL device from?

    ReplyDelete
    Replies
    1. UnknownOctober 2, 2017 at 4:56 AM

      VCSEL device from...
      Maybe II-VI Laser, ULM, PHILIPS, HLJ, SONY, Princeton Optronics, ect

      Delete

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