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8T73S1802 Folha de dados(PDF) 11 Page - Integrated Device Technology |
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8T73S1802 Folha de dados(HTML) 11 Page - Integrated Device Technology |
11 / 24 page REVISION 1 08/31/15 11 1:2 CLOCK FANOUT BUFFER AND FREQUENCY DIVIDER 8T73S1802 DATA SHEET Additive Phase Jitter The spectral purity in a band at a specific offset from the fundamental compared to the power of the fundamental is called the dBc Phase Noise. This value is normally expressed using a Phase noise plot and is most often the specified plot in many applications. Phase noise is defined as the ratio of the noise power present in a 1Hz band at a specified offset from the fundamental frequency to the power value of the fundamental. This ratio is expressed in decibels (dBm) or a ratio of the power in the 1Hz band to the power in the fundamental. When the required offset is specified, the phase noise is called a dBc value, which simply means dBm at a specified offset from the fundamental. By investigating jitter in the frequency domain, we get a better understanding of its effects on the desired application over the entire time record of the signal. It is mathematically possible to calculate an expected bit error rate given a phase noise plot. Offset from Carrier Frequency (Hz) Additive Phase Jitter @ 250MHz 12kHz to 20MHz = 79fs (typical) |
Nº de peça semelhante - 8T73S1802 |
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Descrição semelhante - 8T73S1802 |
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