Wide band Fractional-N frequency synthesizer with on-chip LO frequency doubler

Product No: WEA16S55

  • Applications:5G
  • Maturity:silicon proven
  • Foundry:STMicro
  • Geometry (nm):55nm
  • Process Node:ST BiCMOS55

The WEA16S55 is a wide band Fractional-N frequency synthesizer with on-chip LO frequency doubler implemented in ST BiCMOS55 process. It uses a 100 MHz to 250MHz Crystal Oscillator/ Input Reference Buffer and generates a 6 GHz to 16 GHz frequency range with the integrated VCOs utilizing a 64 band auto-calibration system. It consists of a an XTAL oscillator, a reference Doubler, a programmable Charge Pump, a low noise phase detector with lock detect indication, 5 bank of VCO, a Prescaler and a 12 bit MASH 1-1-1. The synthesizer is powered by a 1.2 V and 2.5 V supplies.

Key Features
  • Low Phase Noise, Low Spur PLL
  • Low pin count
  • Reference input: 100 MHz to 250 MHz
  • Output frequency range: 6 GHz to 16 GHz with the use of Doubler
  • VCO Noise floor: -149 dBc/Hz @70 MHz offset
  • Banerjee figure of merit: -224 dB
  • 2nd harmonic: -25 dBc
  • 3rd harmonic: -40 dBc
  • Lock time: < 2 us
  • Programmable Charge Pump
  • Programmable order MASH, 16 Bit MASH
  • Programmable Loop Filter
  • Bank of LC-VCOs with 64 Bands/VCO
  • Automatic Band Selection System
  • Low noise phase detector with lock detect indication
  • RF, Analog Supply 2.5 V &
  • Digital supply 1.2 V
  • Area: 4.6 mm2