Application of ADF4111 in PLL Frequency Synthesizer
XI You-bao · Dianzi qijian · 2012
To get stable frequency synthesizer used in RF receiver,PLL frequency synthesizer based on ADF4111 is presented,which is controlled by MCU.ADF4111 ' s basic structure and operation principle and its programming process are introduced.At the same time,design of loop filter and VCO is also be introduced.Test results show that its frequency range is 754 MHz～764 MHz,frequency step is 100 kHz,phase noise is better than-90 dBc/Hz@10 kHz、-110 dBc/Hz@100 kHz,output power is 6 dBm.