I want to buy SMD crystals for my project, so i found this:
http://www.aliexpress.com/item/Free-shipping-20PCS-Passive-SMD-crystal-3225-4p-3-2-2-5mm-16MHZ-16M-16-000MHZ/744080324.html
I want to use them on these IC's:
Question 1: Will it work?
Question 2: Do i still need 2x 22pF capacitors?
CrossRoads:
- Yes.
- Yes. Actual capacitance may need to be adjusted. Monitor the actual frequency seen to be sure. See Section 9.3, 9.4 of the datasheet.
Thanks for your time 
Btw, I would like to avoid the use of 2 caps, is there any SMD solution that works just fine? Can you give me a name?
Resonator, select one with internal caps.
What is wrong with using two smd capacitors?
http://www.jameco.com/1/1/44686-c1206c220j1gac-tu-passive-capacitor-22pf-100v-npo-5-smd-1206-tr.html
CrossRoads:
2. Yes. Actual capacitance may need to be adjusted. Monitor the actual frequency seen to be sure. See Section 9.3, 9.4 of the datasheet.
Just to make sure, you mean that based on the amount of current i need to take a look on MHz and the capacitance right?
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Thank you guys, there's no problem with the smd caps it was just curiosity
Be sure to use the correct capacitors for the crystal you select.
LarryD:
Be sure to use the correct capacitors for the crystal you select.
Would you please explain me that with a bit more detail, what should i take into account?
I'm still a noob i would say
If CL from the crystal data sheet was 18pF, and your parasitic+input capacitance for the controller is 10pF (per pin)
Assume this is your SMD crystal https://www.sparkfun.com/datasheets/Components/SPK-5032-16MHZ.pdf
Capacitance per Atmega328 pin 10pf page 321.
18pF(CL) = (C + 10pF(pin cap))/2
C = 26pF per pin i.e. one each on 9 and 10 to ground
FYI:
page 29/321 of Atmega328 data sheet http://www.atmel.com/Images/doc8161.pdf
Abracon | Fox
http://www.lpcware.com/content/faq/how-calculate-value-crystal-load-capacitors
Nice explanation LarryD.
Thank you guys, have a great day