Q
Quack
- Jan 1, 1970
- 0
Hi,
This might seem like a silly question, but before i order my board and
components, this question is just nagging me.
In the following PDF, and in the digikey description, this oscillator
mentions an XXpf load capacitance.
http://www.quack.cc/CM309S.pdf
digikey part: 300-2049-1-ND
My question is, is this already 'inbuilt' into the chrystal, or are
they recommended values i need to add myself ?
Also, considering its a CM309 package, 2 of the pins remain unused, am
i understanding the document correctly ?
Currently i have drawn my layout to use pins 1 and 4 only, and external
load capacitance pads, so atleast if i ommit the external ones or not
it will work either way.
Thanks!
Alex.
This might seem like a silly question, but before i order my board and
components, this question is just nagging me.
In the following PDF, and in the digikey description, this oscillator
mentions an XXpf load capacitance.
http://www.quack.cc/CM309S.pdf
digikey part: 300-2049-1-ND
My question is, is this already 'inbuilt' into the chrystal, or are
they recommended values i need to add myself ?
Also, considering its a CM309 package, 2 of the pins remain unused, am
i understanding the document correctly ?
Currently i have drawn my layout to use pins 1 and 4 only, and external
load capacitance pads, so atleast if i ommit the external ones or not
it will work either way.
Thanks!
Alex.