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 2×5 contacts connector for connection to the main board.

Features:

• 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

Specifications:
– Frequency Range: ADF4351: 35M-4.4G
– Power Supply: DC002 Interface DC4-9V typical 5V
– Output Signal: 2.2-4.4G fundamental wave (sine wave)
35M-2.2G fundamental frequency division (square wave)
– Output Signal Interface: SMA female
– Default + -50ppm 25M import active crystal; Provides PDF circuit diagram and STM32 test program
– Control: three-wire SPI, lead control pin and lock status pin. It can achieve all functions, including point frequency, sweep frequency and frequency hopping, stepping up to 1K, low frequency step up to 0.1K, according to crystal frequency.
– Size (Length x Width): 4848*36.5mm
– Connector Dia.: 6.5mm

Package Included:
1 x ADF4351 Development Board

Documentation and useful links:

Datasheet ADF4351