Tag Archives: LO

LO PLL ADF4350

Developer: US4ICI

PLL contains 2200 — 4400 MHz VCO. VCO frequency divider (multiple of 1/2/4/8/16) allows to synthesize frequencies from 137.5 MHz to 4400 MHz. A good phase noise (approximately -100 dBc/Hz, 10 kHz at a frequency of 1152 MHz). This development designed to be used as SHF LO (beacon, transverter) at a fixed frequency. Recommended frequencies range is between 550 and 4400 MHz. In case of using VCO divider more than /4 you need to take care of filtering the output signal.

Technical specifications

  • Possible programming range of a fixed frequencies: 550 — 4400 MHz
  • TCXO stability: Typ. +/– 0.5 ppm -20 +70 C° @ 10 MHz (external reference connection is possible)
  • Pre-installed frequencies setup: F1 = 1151 MHz (used by default), F2 = 1152 MHz, F3 = 1296 MHz, F4 = 1297 MHz
  • PLL SSB PN @ 10 kHz Offset: -100 dBc/Hz at 1152 MHz
  • Output power: > 10 dBm
  • DC voltage: 5 V
  • DC current: < 140 mA
  • PCB dimensions: 42 mm x 28 mm

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