MEMS in mobile
The seminal MEMS timing chip company, SiTime Inc., of Sunnyvale, Calif., was the first to market a real-time clock to mobile phone makers, but the first radio-frequency MEMS timing chips to crack the mobile phone market will likely come from Sand 9 Inc., of Cambridge, Mass., which promises to have its piezo-electric MEMS chips in a variety of mobile devices by next year.
If you tear down any connected mobile device today, you will find that the biggest components inside are the crystal oscillator "cans." Now Sand 9 has eliminated the need for those bulky components with its sub-millimeter MEMS resonators, which it predicts will enable a new era of thinner, lighter, better-performing mobile handsets.
Sand 9's interdigitated piezo-electric resonator (center) is the world's first MEMS timing solution for cellular phones, due to its electro-mechanical coupling that is 100 times better than traditional MEMS.
(Source: Sand 9)