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How can I build a 150MHz clock? Answered

HI, I need a clock oscillator of 150 MHz for a project. This oscillator must be built up from components and ics and not from a microcontroller.

so i have tried to simulate many quartz crystal colspitt oscillators, only I am unable to build high frequency ones.

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Orngrimm
Orngrimm

1 year ago

150MHz is in a nasty area of HF. High enough to have all sorts of leakage and RF-interference and -immunity-problems. Yet, still not high enough to restart having it behave like DC again (high GHz, THz and up).

Simplest solution: Take an oscillator ready to ose off-the-shelf:
https://www.mouser.ch/Passive-Components/Frequency...

But be aware that you have to know a thing or two about how to handle and use such oscillators...

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Jack A Lopez
Jack A Lopez

1 year ago

You know, you can buy a crystal oscillator as a single component.

Typically, it is little metal box, usually less than 20 mm on a side, and it has three terminals: ground, Vcc, and clock out.

I can point to one I found in Digikey's catalog, here:

https://www.digikey.com/product-detail/en/kyocera-...

with link to a data sheet, here:
http://global.kyocera.com/prdct/electro/product/pd...


It wants 2.5 V, or 3.3 V DC, at 21 mA (max), and has a CMOS output, presumably oscillating with a frequency very close to 150.0000 MHz.

The only downside is, it is one of those tricky little surface mount packages.

I prefer ICs with pins made to drop through holes, because that kind are easier to plug into muh breadboard.
;-)