LMX2541 Datasheet (National Semiconductor Corporation) - High Performance Frequency Synthesizer System

LMX2541, High Performance Frequency Synthesizer System

The LMX2541 is an ultra low noise frequency synthesizer which integrates a high performance delta-sigma fractional N PLL, a VCO with fully integrated tank circuit, and an optional frequency divider.

The PLL offers an unprecedented normalized noise floor of -225 dBc/Hz and can be operated with up to

LMX2541 Features

* Very Low RMS Noise and Spurs

* -225 dBc/Hz Normalized PLL Phase Noise

* Integrated RMS Noise (100 Hz - 20 MHz)

* 2 mrad (100 Hz - 20 MHz) at 2.1 GHz

* 3.5 mrad (100 Hz - 20 MHz) at 3.5 GHz Ultra Low-Noise Integrated VCO External VCO Option (Internal VCO Bypassed) VCO Fr