Teardown Report - Bluetooth Headset

Teardown Report - Bluetooth Headset

V Three Pte Ltd http://www.v-three.com V3 - BTH3 Bluetooth Wireless Headset Product Specification: Weight 14g Standby time 200hrs Talk time 8hrs

I have this headset becasue it is bundled with my mobile phone, Nokia 6230i. Now I am going to teardown it.

Inside the headset, the most famous bluetooth chipset is found, which is the CSR's BlueCore2. They use the CSR's reference design layout that I found in the app's note.

However, whole industry design and the assembly seems not good. Tape is applied to hold the battery and plastic sponge is filled to fix the postion of the PCB. The QC(quailty check) is quite hand-made, they ink the good IC unit and lable "ok" on the PCB. Oh, that is from Singapore Company?

Here are the captures of the bluetooth headset.

V Three Pte Ltd

According to their registation in Global Sources, V3 is a Singapore base company established in 2003. They are bluetooth headset and accessories manufactures, they now have 70 employees in global and their current market are Asia-Pacific and America.

Cambridge Silicon Radio(CSR)

Cambridge Silicon Radio (CSR), the UK fabless semiconductor company that develope the first single-chip of bluetooth devices. CSR has a leading postion in single-chip wireless design, and their Bluetooth business ranks No.1 in global Bluetooth market with the share existing 50%

CSR was found on 1998, spun off from Cambridge Consultants. CSR's first product is Bluetooth CMOS BlueCoreTM01, the first CMOS chip integrated 2.4GHz radio baseband and microcontroller solution. In 2000, Intel Capital, the Intel's strategic investment program, invested CSR which help CSR expand and guarantee the growth of the potential Bluetooth market. Later on, Sony, Philips Ventures, ARM and Siemens joined as a investor in CSR too.

CSR's Milestone......

1998, spun off from Cambridge Consultants. March.2000, first chip shipment.
Jun.2001, CSR has shipped 1 millionth chip.
Nov.2001, CSR make a deal with Microsoft that Microsoft will put CSR Bluetooth technology in Window software.
Oct.2002, CSR has shipped 5 millionth chip.
Jun.2004, CSR delivers over $250 million revenue, 274% growth oever 2003.
Jun.2004, CSR listed on the main market of London Stock Exchange.
Nov.2004, CSR announced UniFi core, the Wi-Fi standard single-chip. UniFi-1 Portable (802.11b/g single band).

CSR's Product Line (updated to 2006)

Core.	Description
BlueCore4	Compliant Bluetooth v2.0 and EDR fro both 2Mbps & 3Mbps BlueCore4-Adio Flash BlueCore4-Audio ROM BlueCore4-External BlueCore4-Flash BlueCore4-ROM BlueCore4-ROM sPnG BlueCore4-Audio
BlueCore3	Compliant Bluetooth v1.2 BlueCore3-ROM sPnG BlueCore3-Audio Flash BlueCore3-Multimedia BlueCore3-Multimedia External
BlueCore2	Compliant Bluetooth v1.1/v1.2 BlueCore2-ROM sPnG BlueCore2-Audio BlueCore2-Flash BlueCore2-External
UniFi-2	0.13um CMOS technology UniFi-2 Enterprise(Ext Flash): 802.11b/b/g UniFi-2 Portable: 802.11b/g UniFi-2 Consumer: 802.11a/b/g BlueCore2-External