This converter allows you to transform frequency stability expressed in PPM (parts per million) or PPB (parts per billion) into frequency variations in Hertz. The tool also displays the minimum and maximum frequency corresponding to this variation for a given oscillation frequency.
Formula
Δf = f × (stability in PPM) / 10 6
f min = f − Δf
f max = f + Δf
Explanation of the formula
The frequency variation Δf is obtained by multiplying the nominal frequency by the stability expressed in parts per million, then dividing by 10 6 . This approach directly converts the relative deviation into an absolute value in Hertz.
Then, the minimum frequency is the nominal frequency minus Δf, while the maximum frequency is the sum of the nominal frequency and Δf. This method identifies the full extent of variation possible depending on the precision of the oscillator.
Uses
- Evaluate the frequency tolerance of an oscillator or clock for a specific application.
- Calculate frequency margins in RF measurement and communication systems.
- Help select components and filters adapted to tolerated frequency variations.
- Present clear technical reports by converting relative stability to absolute Hertz values.