Friday, October 7, 2016

Apple’s Lightning to Headphone Adapter

Jeff Suovanen:

There’s actually a lot going on in there. As expected, one end is a simple female 3.5 mm headphone jack, and the other end is a male Lightning connector. But what’s all that silicon around the Lightning connector end? Most of the retail space near the connector is taken up by a single mystery IC.


In past iPhones like the 6s, both DAC and ADC functions were handled internally. The analog inputs and outputs from the headphone jack (and other components) were wrangled by a single chip on the logic board, a custom Apple/Cirrus Logic IC labeled 338S00105. (In the iPhone 7 and 7 Plus, that same exact chip still exists—because even without a headphone jack, the phone still has to shake hands with the built-in loudspeakers and microphones, all of which use analog signals.)

Martin Steiger:

Various issues with the new Apple headphone adapter: (increased noise, less quality, not compatible with all headphones etc.)

Previously: Lightning to 3.5 mm Headphone Jack Adapter.

Update (2018-06-02): Jeremy Larson:

After one year, this was my third dongle that has needed to be returned, not counting the two I have lost. Two of them started having problems with distorting the audio; one just stopped working altogether.

2 Comments RSS · Twitter

[…] Previously: Removing the iPhone’s Headphone Jack, iPhone 7, Apple’s Lightning to Headphone Adapter. […]

[…] Apple’s Lightning to Headphone Adapter […]

Leave a Comment