SI5335B-B07239-GM

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The SI5335B-B07239-GM is a clock generator, phase-locked loop (PLL), frequency synthesizer chip. It is primarily used in applications such as wired and wireless communications, computing and consumer electronics, industrial, and military/aerospace. This chip supports a variety of output frequencies and phase-lock range, and also offers very good phase noise and spurious performance.

The SI5335B-B07239-GM clock generator, PLL, and frequency synthesizer is based on a patented frequency synthesis algorithm from Silicon Labs. By combining an oscillator (such as an off-the-shelf quartz oscillator) with an analog PLL and digital synthesizer, this chip offers the best of both worlds: a wide range of programmable clock frequencies, with low-jitter and low-noise performance. The chip supports up to six outputs with fixed frequency and spread spectrum clock options.

The SI5335B-B07239-GM’s working principle relies on a single crystal quartz oscillator. This reference signal serves as an input to the chip, and is divided down internally to generate low-frequency clock signals. These low-frequency signals are then used by the chip’s PLL and digital synthesizer to generate a wide range of clocks. The PLL works by counting the incoming signal and then adjusting the rate of the local oscillator to create an exact frequency match. The digital synthesizer creates additional frequencies from the incoming reference signal using a multiplication process.

Once programmed, the SI5335B-B07239-GM provides a variety of fast clock outputs, adjustable from as low as 10kHz up to 133MHz. The chip also of-fers up to 12.3dB of spurious-free dynamic range (SFDR). In addition, the chip can generate spread spectrum clocks with varying output frequencies that help reduce the amount of Electromagnetic Interference (EMI) generated by the system.

The SI5335B-B07239-GM offers excellent phase noise performance, with more than -140dbc/Hz at a 1kHz offset. The chip also offers a very low additive jitter of 0.45ps RMS, as well as a very low noise floor. All of this helps make the chip a great choice for any application where noise, jitter, and EMI are of concern. It’s also a very reliable chip, with a highly impressive Mean Time Between Failures (MTBF) of more than a million hours.

The SI5335B-B07239-GM clock generator, PLL, and frequency synthesizer chip is an ideal choice for a variety of applications. From wireless and wired communications, to computing and consumer electronics, to industrial and military/aerospace, this chip has the performance, reliability, and features to meet the needs of any application.

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