F
feedbackkiller
Guest

Hi everybody !
I need an oscillator which runs at 32,83 MHz with +7dBm output power.
I want to keep it as simple as possible, so I want to use a crystal
oscillator and an op-amp.
As this design will be unique (no series production), I searched
some catalogues and found some off-the-shelf crystal oscillators
with 32 MHz and 33,33 MHz and one with 32,768 MHz which might be
suitable.
I know that it is possible to (de-)tune a crystal oscillator with
a series or parallel capacitor (depending on the type of XO).
At the moment I have that problem that I can´t figure out how big the
capacitor needs to be to reach the desired frequency of 32,83 MHz or
if I will ever reach the desired frequency with the oscillators I can get.
Can any one help me ?
P.S.: I know that I also could use a XO with a higher frequency together
with a prescaler/PLL, but that seems too sophisticated to me at the moment.
thanks,
feedbackkiller
<font size=-1>[ This Message was edited by: feedbackkiller on 2002-02-20 15:04 ]</font>
I need an oscillator which runs at 32,83 MHz with +7dBm output power.
I want to keep it as simple as possible, so I want to use a crystal
oscillator and an op-amp.
As this design will be unique (no series production), I searched
some catalogues and found some off-the-shelf crystal oscillators
with 32 MHz and 33,33 MHz and one with 32,768 MHz which might be
suitable.
I know that it is possible to (de-)tune a crystal oscillator with
a series or parallel capacitor (depending on the type of XO).
At the moment I have that problem that I can´t figure out how big the
capacitor needs to be to reach the desired frequency of 32,83 MHz or
if I will ever reach the desired frequency with the oscillators I can get.
Can any one help me ?
P.S.: I know that I also could use a XO with a higher frequency together
with a prescaler/PLL, but that seems too sophisticated to me at the moment.
thanks,
feedbackkiller
<font size=-1>[ This Message was edited by: feedbackkiller on 2002-02-20 15:04 ]</font>