SI5335D-B01287-GMR

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Clock Generators, PLLs, Frequency Synthesizers, have been widely applied in a variety of applications where frequency generation, precision timing and signal synchronization are needed. SI5335D-B01287-GMR, a Silicon Labs frequency synthesizer, is no exception. In this article, the application field of SI5335D-B01287-GMR and its working principle will be discussed in detail.

Application field of SI5335D-B01287-GMR

The SI5335D-B01287-GMR is a low-power and wide-band frequency synthesizer which is capable of delivering clock frequencies from 25 MHz to 810 MHz, a frequency range ideal for many cellular, broadband, and RF/microwave applications. The device also provides an I2C/SMBus serial port for programming flexibility. SI5335D-B01287-GMR is designed to be used in a wide variety of applications, including but not limited to:

• Wireless LANs (WLANs)
• Bluetooth/WiFi modules
• Cellular base stations
• Communication systems
• RF test systems
• Data conversion applications

Given its wide frequency range, SI5335D-B01287-GMR is a perfect choice for those scenarios where multiple frequency references are required.

Working Principle of SI5335D-B01287-GMR

SI5335D-B01287-GMR is composed of a 25-MHz to 810-MHz frequency synthesizer, programmable through an I2C/SMBus serial port. The device includes a voltage controlled oscillator (VCO), a 1.8V reference crystal, a frequency divider and a clock-synthesis circuit.

The general working principle consists of three steps, first the reference clock must be provided to the frequency synthesizer. This reference clock is used to calculate the oscillator frequency of the VCO and the required frequency target. Then the voltage-controlled oscillator generates a signal with desired frequency from a wide range of input voltage levels. Finally all required frequencies are divided to get the desired output.

The user can program the output frequency via the I2C/SMBus port. Different parameters, such as VCO range, frequency range, output type and power, could be configured and adjusted to cater different applications. Outstanding features of SI5335D-B01287-GMR, such as its selectable single-ended or differential outputs and its adjustable output power, enable the device to be adapted to different applications.

Conclusion

In conclusion, SI5335D-B01287-GMR is a multi-application friendly device designed for clock generation, precision timing and signal synchronization. Its wide frequency range (25 MHz to 810 MHz) and high flexibility allow it to be applied in many applications, such as WLAN, Bluetooth/WiFi modules, cellular base stations, and RF test systems. The device also offers low-power solutions, single-ended or differential outputs and adjustable output power, all of which make SI5335D-B01287-GMR a perfect choice for next-generation clock/timing applications.

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