SUNNYVALE, USA: It has been a month now since Apple released itsmuch hyped and anticipated

3G iPhone. Demand is still strong for the new iPhone as there are stilllines outside of Apple stores to buy the precious idle.

Teardowns of the iPhone started the day it came out, withrevelations of who the key

semiconductor suppliers were.  As is typical, the Xtal and oscillator contentwas overlooked in these teardowns, and CS&A is here to remedythat.

Fig. 1 shows the main board of the Apple iPhone with the Xtal andoscillator content identified.

Fig. 1

There are five xtal and oscillator components: (2) 32kHz Xtals, (1)MHz Xtal, and (2) TCXOs.  A quick calculation of market pricingshows close to $3 worth of Xtal and oscillator content.There aretwo TCXOs in the iPhone.  One TCXO is a cellular reference at26MHz, and drives the Infineon RF transceiver.

While in a GSM handset, a high-stability MHz Xtal is used as the RFreference,

W-CDMA

From www.chinatopsupplier.com