Designing a 200MHz CMOS oscillator with crystal base IC

[ex4]

oscillator 200mhz small

Is it possible to design 200MHz squarewave oscillator using only one ordinary CMOS IC with crystal base around 4MHz?
I've seen one on the net clim can , but i forgot where the link is

 

[yaxazaa]

200mhz oscillator multiplier

20MHz Crystal can only gerenate 20MHz output, may be overtone say 40MHz, if you want 200MHz output then you need a PLL

 

[rkodaira]

Re: 200MHz CMOS Oscillator

Elektor magazine UK edition issue july/august 2004 has a circuit like you want.

With a 10 MHz crystal and using a 74HC04 and some notch and high-pass filters, it can multiply the frequency by 9, obtaining 90MHz @ +13 dBm. Each stage of inverters and filters rejects the fundamental signal generated by a a squarewave oscillator and the high-pass filter leaves the 3rd harmonic to pass to the next stage and the process is repeated.

Original article: CMOS Frequency Multiplier.

 

[sp]

200MHz CMOS Oscillator

i study bout ring oscillator using inverter.....

and the period of the output waveform is given -> T= (2x N x tp)..... f = 1/(2x N x tp)

tp is the propagation delay of the inverter... N is the number of inverter (odd number only)

the tp is very small.. in nano range... so the frequency can b very large....

so is this posible to b the clock?..

regards,
sp

 

[Teddy]

Re: 200MHz CMOS Oscillator

SP - that is the idea behind ring oscillator

 

[sp]

200MHz CMOS Oscillator

Teddy... thanks

so... is ring oscillator used as a general crystal?... for large frequency??

sp

 

[dendrite]

200MHz CMOS Oscillator

PLL is the best choose.
h**p://www.fujitsu.com/us/services/edevices/microelectronics/asic/mixedsignal/

 

[montage3000]

200MHz CMOS Oscillator

pll or MDLL can do it