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Home » NEWEST Products » New by Manufacturer » Skyworks Solutions Inc. » Skyworks Dual Fractional-N Frequency Synthesizer
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Skyworks Dual Fractional-N Frequency Synthesizer

Skyworks Dual Fractional-N Frequency Synthesizer

Skyworks Dual Fractional-N Frequency Synthesizer provides direct digital modulation, ultra-fine frequency resolution, fast switching speed, and low phase-noise performance. Skyworks Dual Fractional-N Frequency Synthesizer is a key building block for high performance radio system designs that require low power and fine step size. The ultra-fine step size of less than 100Hz allows this synthesizer to be used in very narrowband wireless applications. With proper temperature sensing or through control channels, the synthesizer’s fine step size can compensate for crystal oscillator or Intermediate Frequency (IF) filter drift. As a result, crystal oscillators or crystals can replace temperature-compensated or ovenized crystal oscillators, reducing parts count and associated component cost. The device’s fine step size can also be used for Doppler shift corrections.

Features:
  • Spur-free operation
  • High internal reference frequency enables large loop bandwidth implementations
  • Very fast switching speed (e.g., below 100Ps)
  • Software programmable power-down modes
  • High-speed serial interface up to 100Mbps
  • Three-wire programming
  • Programmable division ratios on reference frequency
  • Phase detectors with programmable gain to provide a programmable loop bandwidth
  • Frequency power steering further enhances rapid acquisition time
  • On-chip crystal oscillator
  • Frequency adjust for temperature compensation
Applications:
  • General purpose RF systems
  • 2.5G and 3G wireless infrastructure
  • Broadband wireless access
  • Low bit rate wireless telemetry
  • Instrumentation
  • L-band receivers
  • Satellite communications
Part Number Package Main Synthesizer Freq. Aux. Synthesizer Freq. Step Size Datasheet
SKY72300-21 EP-TSSOP-28 100-2100MHz 100-500MHz ≤100Hz Datasheet
SKY72300-362 QFN-24 100-2100MHz 100-500MHz ≤100Hz Datasheet
SKY72302-21 EP-TSSOP-28 400-6100MHz 100-1000MHz ≤400Hz Datasheet
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