SKY72310-362LF Buy Now
Spur-Free, 2.1 GHz Single Fractional-N Frequency Synthesizer

The SKY72310-362LF is a key building block for high-performance radio system designs that require ultra-fine frequency resolution, fast switching speed, and low phase-noise performance. With proper temperature sensing or through control channels, the synthesizer’s fine step size can compensate for crystal oscillator or 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 SKY72310-362LF has a frequency power steering circuit that helps the loop filter to steer the VCO when the frequency is too fast or too slow, further enhancing acquisition time.

Please note: SKY72310-362LF is being discontinued and is not recommended for new design.


  • Spur-free operation
  • Ultra-fine step size, 100 Hz or less
  • Very fast switching speed (e.g., below 100 μs)
  • Three-wire, serial interface programmable
  • On-chip crystal oscillator
Data Sheets SKY72310 Spur-Free,2.1 GHz Single Fractional-N Frequency Synthesizer 200705E.pdf (205 KB)
Miscellaneous SKY72310 Control Software (382 KB)
ProductName : SKY72310-362LF
Main Synthesizer Frequency (MHz) : 100-2100
Main Synthesizer Phase Noise (dBc/Hz) : -91 @ 1800 MHz
Supply Voltage (V) : 2.7-3.3
Package : QFN, 24-pin
Package (mm) : 4 x 4 x 0.9
Product Information:
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