Spread spectrum clock generator

by likephysics
Tags: clock, generator, spectrum, spread
likephysics is offline
Aug25-10, 12:59 AM
P: 596
I was reading an article on spread spectrum clock generator here - http://www.maxim-ic.com/app-notes/index.mvp/id/1995
Wouldn't spreading the frequency from the center frequency affect the data transfer?
In case of a CPU, the speed would vary too.
I understand spread spectrum in communication, but I'm having a hard time convincing myself this would work in digital circuits.
Isn't this somewhat equivalent to jitter?
Phys.Org News Partner Engineering news on Phys.org
Fiber-optic microscope will help physicians detect cancer, diseases at early stages
Wind tunnel tests support improved aerodynamic design of B61-12 bomb
Smart sensor technology to combat indoor air pollution
Mike_In_Plano is offline
Aug25-10, 09:37 PM
P: 557
Usually, the system clock is fluctuated, and all the peices of the system run off the same clock. Therefore, they're all synched and the clock jumps about enough that the test facility gets a lower reading when performing interference tests.
The emission power is the same, it's just spread about so that less shows up within any narrow bandwidth.

Register to reply

Related Discussions
Relation between spectrum in algebraic geometry and spectrum in functional analysis Linear & Abstract Algebra 0
a moving clock lags behind a stationary clock Special & General Relativity 2
Frequency Hoping spread spectrum question Electrical Engineering 10
OFDM vs Frequency Hoping spread spectrum Electrical Engineering 1