SI5338M-B02489-GMR

Series:	*
Packaging:	Tape & Reel (TR)
Part Status:	Active
Mounting Type:	Surface Mount
Package / Case:	24-VFQFN Exposed Pad
Supplier Device Package:	24-QFN (4x4)

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Introduction

The SI5338M-B02489-GMR is a frequency synthesizer produced by SiTime Corporation with a frequency range of 1 Mhz to 250Mhz. It is a multi-channel high performance device with a built-in phase locked loop (PLL) and on-chip oscillator. The SI5338M-B02489-GMR is able to deliver outstanding performance in applications such as high-speed communication, broadband switches, precision - measurement, digital receivers, and ultra-low power audio clocks.

Application Field

The SI5338M-B02489-GMR is ideal for use in communication and precision measurement applications. Its frequency range and low power consumption make it particularly suitable for wireless, cable and IP applications. Its high precision PLL and on-chip oscillator make it ideal for use in digital receivers and precision test equipment. Its high-speed output and low power consumption make it great for wireless applications such as wireless LANs, Bluetooth and Wi-Fi, and for audio playback and other ultra low-power applications.

Working Principle

The SI5338M-B02489-GMR works by using a phase locked loop (PLL) to synthesize the output frequency from a reference input. The reference is typically a low-noise crystal oscillator with a frequency of 1 MHz to 250MHz. The PLL circuit then synthesizes the output frequency by multiplying the reference frequency by an integer value. This process is called frequency multiplication. Once the synthesized frequency is generated, the SI5338M-B02489-GMR can generate several different outputs such as differential LVPECL, single-ended LVDS and LVTTL outputs.The SI5338M-B02489-GMR also features a spread-spectrum mode which is designed to reduce electromagnetic interference emissions in applications, such as cellular phones and other high-volume platforms. This mode works by modulating the output frequency which is achieved by a reduction and an increase of the oscillator frequency. The result is achieved by cycling the oscillator frequency at an amplitude and spreading the signal to reduce the peak emissions.

Conclusion

The SI5338M-B02489-GMR is a multi-channel, high-performance frequency synthesizer that is ideal for communication and precision measurement applications. It is capable of generating a wide range of output frequencies and its spread-spectrum mode makes it great for use in applications where electromagnetic interference needs to be reduced. With its low power consumption and outstanding performance, it is sure to be a staple in Clock/Timing applications for years to come.

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