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
- 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