Google USB-C Digital to 3.5 mm headphone adapter disassembly

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Unlike the previous generation Pixel phone, the second generation of Google Pixel, the Google Pixel 2/2 XL phone, canceled the 3.5mm headphone jack on the body, and then matched a USB-C to 3.5mm headphone adapter. Next we will disassemble it.

Google Pixel 2 USB-C Digital headphone adapter appearance.


This cable named USB-C Digital to 3.5 mm headphone adapter on google website, cable jacket is made from TPE material. The entire length of the line is approximately 10 cm.


The gold-plated copper contacts in the earphones are in good contact with the 3.5mm plug of the headphones.


Google Pixel 2 USB-C Headphone adapter used seamless USB-C shell

Google Pixel 2 USB-C headphone adapter disassambly.


Disassemble the USB-C plug section, which can be easily cut off due to the soft rubber outer skin.


The inside is a metal shielded protective case wrapped around a ring of high temperature resistant tape.


There is a layer of solid glue inside when opening the protective cover.


The Google Pixel 2 USB-C headphone adapter used the Realtek ALC4021 USB audio chip for USB communication and audio decoding. The parameters are not released on the internet yet.


On the back of the motherboard, there is a Realtek ALC5663 Chip, which is a headphone amplifier, THD+N<=-100dB, SNR<=-124dB, crosstalk<=-100dB, More importantly, the headphone amplifier can output 2Vrms to support the perfect listening experience of high-impedance headphones (250 Ohm~600 Ohm).


GigaDevice D05BU memory for storing brand information and configuration data parameters.


TI Texas Instruments TPS62743 buck IC. Apple's AirPods (part of the batch) also use this buck IC.


Remove the plastic outer skin at the end of the 3.5mm headphone jack and the surface is a layer of high temperature resistant tape. After tearing off a layer of tape, you see a metal shield.


Remove the metal shield and you will see the terminals in the 3.5mm socket.


Disassembly Summary
1. It adopts pure white TPE material wire, anti-freeze anti-skid, not easy to crack;
2. Using Realtek ALC4021 USB audio chip with Realtek ALC5663 headphone amplifier, can provide high-quality audio decoding capabilities and amplifies effect;
3. USB-C plug and 3.5mm socket good workmanship.

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