(free) Turning to Digital Crys...

Turning to Digital Crystals in GSM Transceivers
Turning to Digital Crystals in GSM Transceivers
VC-TCXO modules bring a size and cost penalty to next-generation GSM
handset designs. Fortunately, DCXOs architectures are emerging that will
addresses size and cost concerns in mobiles.
Today, most GSM handsets use voltage-controlled, temperature-compensated
crystal oscillator (VC-TCXO) modules as the system reference oscillator. To
establish and maintain a robust wireless connection, the reference
oscillator must attain high levels of precision and accuracy.
Since accuracy over time is critical in a wireless phone design, the
reference oscillator must be able to compensate for both static and dynamic
errors. VC-TCXO modules meet these requirements through analog techniques
to correct frequency devi