Oscillators for spread spectrum When compared to a standard single tone, spread-spectrum crystal oscillators (SSXOs) create a larger variety of output frequencies with spectral lines.
Their output frequency varies in a small range around the appropriate clock rate.Spread-spectrum oscillators are used to reduce spectral EMI emissions in systems from printers to gaming consoles.
Originally designed for military use, spread spectrum refers to a technique that enables secure communications by dispersing the signal across a wide frequency band. In the frequency domain, it denotes a signal with a small band. Any other signal in the same band can easily block these narrowband signals.
Two methods are frequently used to disperse the spectrum: 1) Frequency hopping (FH), which causes the narrow band signal to sporadically change narrow band frequencies within a wider bandwidth. 2) Direct sequence (DS), which increases the data’s bandwidth by introducing a quick phase transition.
The Global Spread-Spectrum Oscillators market accounted for $XX Billion in 2023 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
Spread-spectrum Oscillator, 1 to 141 MHz
The field-programmable SiT9005 spread spectrum oscillator (SSXO) is built to ensure emissions compliance, a crucial step for every electronics device, and to shorten time to revenue.
Reduced noise by up to 30 dB, plug-and-play without requiring design changes, and field programmable for immediate validation
Failure to comply with emissions regulations, which often occurs in the final stages of product development, can lead to unanticipated troubleshooting tasks and expensive production delays.
Spread spectrum clocking and rise/fall time averaging of the clock signal are two strategies for compliance offered by the SiT9005 that address the EMI issue. Additionally, the SiTime Time Machine II programmer supports the SiT9005, enabling engineers to instantaneously design spread modulation and/or drive strength to swiftly lower emissions levels.
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