Audio and Video

Teardown: Apple AirPods Pro with charging case

15 April 2020
The following is an overview of a teardown analysis conducted by IHS Benchmarking.

Since the days of the Sony Walkman, the market for headphones has decreased in physical size to the point where earbuds have become the latest craze.

Apple introduced its first generation of AirPods in 2016 as Bluetooth earbuds that were wireless for extra portability. Since that time, the company has only improved its design with the AirPods Pro for its connected devices including the iPod, iPhone, iPad and more.

This teardown focuses on the AirPods Pro with its accompanying charging case that was released late last year. The headphones include two Bluetooth modules, active noise canceling and a wireless charging case.

The Apple AirPods Pro with charging case. Source: OmdiaThe Apple AirPods Pro with charging case. Source: Omdia

Summary points

Apple's Bluetooth wireless headset with charging case

Bluetooth module contains Apple H1 system-on-chip

Active noise canceling

Wireless charging case

Target market: Mass market

Released: Oct. 2019

Pricing: $249

Availability: Worldwide

Total manufacturing costs: $51.47

The components inside the charging case of the AirPods Pro. Source: OmdiaThe components inside the charging case of the AirPods Pro. Source: Omdia

Charging case

1. Wireless charging coil, copper coil on flexible substrate, w/ferrite sheet on copper foil, w/PSA

2. Setup button PCB assembly, injection molded plastics w/dome switch w/four gold-plated contracts

3. Setup button spacer, machined metal w/black mylar tape

4. Gasket, injection molded TPE

5. Setup button, injection molded plastic

Charging case PCB

1. Broadcom, BCM59356, wireless charging receiver, WPC Qi compliant

2. ST Microelectronics, STM32L476MGY6, MCU 32 bit ARM Cortex-M4 core, 80 MHz, 1 MB flash and 128 KB SRAM, three 16 channel 12 bit ADCs, 65 GPIOs

3. Texas Instruments, BQ25116AYFPR battery charger

4. Bosch Sensortec, accelerometer, 3-axis

5. EEPROM

Left ear headphone enclosure

1. Enclosure, left ear, main injection molded plastic, clear coat printed

2. Loudspeaker windscreen, metal mesh, die-cut with mylon mesh and foam rubber cushion

3. Internal antenna bracket, injection molded plastic with LDS antenna with 124 mm 0.4 mm OD coaxial wire and coaxial plug

4. Charging contact, injection molded plastic with two plated machined metals

5. Antenna cover, stamped/formed stainless steel

6. Two layer, flex Kapton with three metal tabs

7. Two layer, flex Kapton

The semiconductor components inside the right ear PCB of the AirPods Pro. Source: OmdiaThe semiconductor components inside the right ear PCB of the AirPods Pro. Source: Omdia

Right ear main PCB

1. Bluetooth module, contains Apple H1 system-on-chip, Bluetooth V5.0

2. Bosch Sensortec, accelerometer/gyroscope

3. ST Microelectronics, accelerometer, three axis

Major components:

  • $3.73 — Bluetooth module, contains Apple H1 SoC, Bluetooth V5.0 (Qty: 1)
  • $3.73 — Bluetooth module, contains Apple H1 SoC, Bluetooth V5.0 (Qty: 1)
  • $2.78 — SiP Module A, contains Dialog D2508B and Cirrus Logic CS44L22, w/ADI AD7149-6ACBZ Touch Controller (Qty: 1)
  • $2.78 — SiP Module A, contains Dialog D2508B and Cirrus Logic CS44L22, w/ADI AD7149-6ACBZ Touch Controller (Qty: 1)
  • $2.30 — Battery pack, li-polymer, two-cell, 3.81 V, 519 mAh, 1.98 Wh, w/Flex PCB and board-to-board connector (Qty: 1)
  • $1.71 — Two-layer, FR4, lead-free (Qty: 1)
  • $1.71 — Two-layer, FR4, lead-free (Qty: 1)
  • $1.35 — MCU, 32 bit ARM Cortex-M4 Core, 80 MHz, 1 MB Flash and 128 KB SRAM, three 16 channel 12 bit ADCs, 65 GPIOs — MFR: ST Microelectronics (Qty: 1)
  • $1.15 — Battery, li-ion, coin type, 3.7 V, 43 mAh, 0.16 Wh — MFR: Vatra Microbattery Gmbh (Qty: 1)
  • $1.15 — Battery, li-ion, coin type, 3.7 V, 43 mAh, 0.16 Wh — MFR: Vatra Microbattery Gmbh (Qty: 1)
To contact the author of this article, email engineering360editors@globalspec.com


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