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LMX2581 - Wideband Frequency Synthesizer

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General Description

The LMX2581 is a low noise wideband frequency synthesizer that integrates a delta-sigma fractional N PLL, multiple core VCO, programmable output divider, and two differential output buffers.

The VCO frequency range is from 1880 to 3760 MHz and can be sent directly to the output buffers or divided down by even values from 2 to 38.

Each buffer is capable of output power from -3 to +12 dBm at 2700 MHz.

Overview

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LMX2581 SNAS601G – AUGUST 2012 – REVISED SEPTEMBER 2014 LMX2581 Wideband Frequency Synthesizer with Integrated VCO.

Key Features

  • 1 Output Frequency from 50 to 3760 MHz.
  • Input Clock Frequency up to 900 MHz.
  • Phase Detector Frequency up to 200 MHz.
  • Supports Fractional and Integer Modes.
  • 229 dBc/Hz Normalized PLL Phase Noise.
  • 120.8 dBc/Hz Normalized PLL 1/f Noise.
  • 137 dBc/Hz VCO Phase Noise @ 1 MHz offset for a 2.5 GHz Carrier.
  • 100 fs RMS Jitter in Integer Mode.
  • Programmable Fractional Modulator Order.
  • Programm.

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