dyunasing
Junior Member level 3
hi, all,
I am a bit confused by the concept of frequency tolerance of a quartz crystal.
I can always carry out a load capacitance matching exercise to make sure the crystal is working at its center frequency, right?
After matching, the crystal is working at 0 ppm?
Then how does the frequency tolerance concept come in?
Lets say I have 2 quartz crystals, one has 20ppm frequency tolerance specified in the datasheet and the other 50ppm.
After both crystals go through the matching exercise at room temp, both crystal operates at their center frequency.
Are both parts equal in performance under room temp?
Dyu
I am a bit confused by the concept of frequency tolerance of a quartz crystal.
I can always carry out a load capacitance matching exercise to make sure the crystal is working at its center frequency, right?
After matching, the crystal is working at 0 ppm?
Then how does the frequency tolerance concept come in?
Lets say I have 2 quartz crystals, one has 20ppm frequency tolerance specified in the datasheet and the other 50ppm.
After both crystals go through the matching exercise at room temp, both crystal operates at their center frequency.
Are both parts equal in performance under room temp?
Dyu