LMX2541-SQE3320E Ultra Low Noise Frequency Synthesizer with integrated 3130 to 3600MHz VCO.  Using the internal divider the PLLcan be programmed to divide the VCO frequency down from 1 to 63 to produce lower frequencies and lower phase noise.

Package size is a very small 36 pin 6x6x0.8mm  WQFN-36

Please refer to the LMX2541 Data Sheet for more information.