OMG !!! if I only knew they existed earlier !
I spend hours to make this: http://forum.allaboutcircuits.com/showpost.php?p=244923&postcount=9 (see attachment), when there is a chip that does all that and much better !
Most of the "Programmable Oscillators" I found it seems that the factory will program the chip to a fixed frequency, then they give it you... what's the point of that ?
Anyways, now... this one: LTC6903/LTC6904, is another story, it seems that it can be programmed on the fly with a microcontroller, and it goes from 1kHz to 68MHz, awesome !! exactly what I need !!
One thing that is confusing is that if you look at the sample diagram in the "TYPICAL APPLICATION" section, the clock of the Oscillator goes back into the microcontroller, pin "OSC1/CLKIN". Now the thing is, the microcontroller is PIC16F73, and it goes up to 20MHz, so how does that work ?
I spend hours to make this: http://forum.allaboutcircuits.com/showpost.php?p=244923&postcount=9 (see attachment), when there is a chip that does all that and much better !
Most of the "Programmable Oscillators" I found it seems that the factory will program the chip to a fixed frequency, then they give it you... what's the point of that ?
Anyways, now... this one: LTC6903/LTC6904, is another story, it seems that it can be programmed on the fly with a microcontroller, and it goes from 1kHz to 68MHz, awesome !! exactly what I need !!
One thing that is confusing is that if you look at the sample diagram in the "TYPICAL APPLICATION" section, the clock of the Oscillator goes back into the microcontroller, pin "OSC1/CLKIN". Now the thing is, the microcontroller is PIC16F73, and it goes up to 20MHz, so how does that work ?