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ppm_to_Hz_converter.php    5807 Bytes    22-04-2024 03:21:58

PPM to Hz Converter

Designed on public demand.

Frequency Stability in a crystal / crystal oscillator is usually specified in ppm (parts per million). For a high quality crystal oven, the term ppb (parts per billion) is used. This converter gives you the equivalent variation in kHz.

Crstal Specifications in a Datasheet

Example, from "Crystal Units/Crystal Oscillators" by Murata

Center Frequency

Tolerance [±]

Frequency Variation [±]


Minimum Frequency

(same unit as Center Frequency)

Maximum Frequency

(same unit as Center Frequency)



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t1 = 6587 d

t2 = 160 ms

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