Subscribe by email

LMX2541 low noise frequency synthesizer

National Semiconductor introduces new low noise frequency synthesizer. This new low noise frequency synthesizer , LMX2541 integrates a high performance delta-sigma fractional N PLL, a VCO with fully integrated tank circuit, and an optional frequency divider.
The LMX2541 integrates several low-noise, high precision LDOs and output driver matching network to provide higher supply noise immunity and more consistent performance, while reducing the number of external components.
The LMX2541 is available in a family of 6 devices with varying VCO frequency range from 1990 MHz up to 4 GHz. Power supply needed for this circuit is between 3.15 and 3.45 volts .
Main features of the LMX2541 are : Very Low RMS Noise , 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 Frequency Divider 1 to 63 (all values) , Programmable Output Power , Up to 104 MHz Phase Detector Frequency , Integrated Low-Noise LDOs , Programmable Charge Pump Output , Digital Frequency Shift Keying (FSK) Modulation Pin , Integrated Reference Crystal Oscillator Circuit , Hardware and Software Power Down , 1.6 V Logic Compatibility
LMX2541 circuit can be used in applications like : Wireless Infrastructure (UMTS, LTE, WiMax) , Broadband Wireless , Wireless Meter Reading , Test and Measurement .
LMX2541 low noise frequency synthesizer

Add new comment