On 3/14/17 5:04 AM, Bob Camp wrote:
Hi
The cost difference between a complete oscillator package and a simple
crystal is tiny. The osc is often cheaper if you include board space or
engineering time.
Purchased in volume, the difference it the price of a crystal vs a complete XO
is enormous. You will see at least a 10:1 cost savings on the crystal and likely
more than that. Simply attaching a crystal to the internal oscillator inside a
chip is nearly zero engineering cost. If your product is cost sensitive and
not super tight tolerance … you go with the crystal.
And that crystal business (gazillions of inexpensive 16 MHz crystals) is
very different from making an approximately 12 MHz crystal used in a
VCXO that will be FMed and multiplied up by 36 to make a 430 MHz
transmitter, oh, and that matches whatever temperature compensation
scheme GE used in 1970.
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