Module based on chip ADF4351 of the Analog Devices, a broadband frequency synthesizer with a Phase-Locked Loop (PLL) and a Voltage-Controlled Oscillator (VCO). In the module we find also the power system made of LDO regulators, the loop filter, the active crystal oscillator of 25 MHz as a reference source, the SPI serial interface and Power and lock standby LED detector. It also has three SMA connectors, two of which are named: OUT + and OUT-, which make available the RF signal on two complementary outputs, and a third one signed REF IN, for the connection of an external reference source. Also present are, the DC IN power input connector and a 2x5 contacts connector for connection to the main board.

• Output frequency range: 35 MHz to 4400 MHz
• Output Signal:
  - fundamental wave (sine wave) 2,2 GHz to 4,4 GHz
  - fundamental frequency division (square wave) 35 MHz to 2,2 GHz
• Output power programmable in 3 db steps: from -4 dBm to +5 dbm (+/- 1 db) on a 50 ohm load
  External reference RF source (SMA REF IN connector): frequency from 10 MHz to 250 MHz
  Internal reference RF source: 25 MHz +/- 50ppm active oscillator
• RF output with SMA OUT+ and OUT- connectors
• SPI serial communication interface
• LED indicators for Lock Detect and power supply
• Power supply: DC4-9V typical 5V
• Size (mm): 48,5x37x12

• Datasheet ADF4351