Resonators vs crystal with load capacitance?

[abdullahseba]

Hi
I'm designing a circuit that uses the nRF24 IC. The nrf requires a 16MHz crystal with 2 22pF caps. So I'm wondering if one of these would work https://www.mouser.com/ds/2/741/LFXTAL062487Reel-1000954.pdf ?
It says it has a load capacitance of 22pF but does not say it has built in caps. Then looking at the arduino schematic, I saw that it used a resonator https://www.mouser.com/ds/2/281/p16e-522700.pdf that has caps shown.
Only problem is I cant find a resonator  with a 22pF and 27pF cap While I can find 4 or 3 pin crystals with that "load capacitance"

So can I use a crystal with load capacitance? And Whats the difference between a crystal with load capacitance and a resonator ?

Thanks in advance.

[ogden]

Ceramic resonators are not for RF application! They have awful tolerance compared to crystals, temperature drift as well.

[capt bullshot]

In general, do not use resonators for circuits that require a stable frequency. Resonators have large initial tolerances (in the percent range, compared to ppm range for crystals), and have real bad temperature drift. As your nRF24 would generate its radio frequencies from the resonators frequency, this would cause to RF frequency to be off the nominal value and your RF comms would not work.

For the crystal, the load capacitance is usually added as these two external capacitors. The total load capacitance is calculated from then IC's internal and stray capacitance plus the external capacitors (as a series circuit) and shall match the crystals specification. So if you have a different load capacity specified for a particular crystal, you can adjust the external capacitors accordingly.
Resonators have different load capacity requirements, most ICs can be used with resonators and crystals as well, just adjust the external capacitors according to the datasheet of the resonator - some of them might require no capacitors at all.