XO and VCXO Crystals

12/341/2013 | 12:19 AM

Question

What crystals are used in the different XO and VCXO product families?

Answer

There are currently 3 different crystals used in Silicon Labs' XO and VCXO product families as listed below:
1. 114.285 MHz 3rd overtone mode - Si53x/55x/57x
2. 39.17 MHz fundamental mode - Si59x
3. 31.98 MHz fundamental mode - Si51x
These are all AT-cut crystals intended to operate over -40C to +85C ambient temperature. The crystal selection for a particular device family is based on a cost versus performance trade-off.

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XO and VCXO Crystals

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