【通信应用笔记】使用智能手机系统设计中的时钟分配电路 AN2760 Application note Using clock distribution circuits in smart phone system design Introduction As smart phones become more and more popular in the market, additional features such as A-GPS, Bluetooth, WLAN and DVB-H are now included in the cell phone design. In all of these application modules, there is a common need for a master clock which is typically an external crystal oscillator. With the master clock the data transmitted or received is modulated to the proper frequency. In this application note, conventional clock trees which ……