PLL clock multiplier

[KA4HJH]

>Hi guys,
>
>I just found that there are some chips on the market that allow easy
>clock multiplying.

This is a common technique now for getting those 100MHz+ clocks for computers.
One scheme is to start out with the bus speed, say 50MHz, then multiply it
by 4 or 5. Now you have both clocks.

>For instance, in a project I'm working on, I need a 96 MHz clock source.
>I searched several
>components catalogs but didn't find that value. It looks like with those
>chips, I can simply
>use a standard 12 MHz Xtal and apply a x8 multiplier factor...

The clever clock chipper comes along and replaces the osciallator with a 60
or 66 MHz, while changing the multiplication to keep the processor from
overheating--or just plain freaking out. In some cases it's necessary to
replace the original PLL because it doesn't have the bandwidth.

>Has anybody tried this ?

No reason why it shouldn't work.

Terry Bowman, KA4HJH
"The Mac Doctor"