Datasheet Texas Instruments LMX2581SQ/NOPB — 数据表

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SNAS601G – AUGUST 2012 – REVISED SEPTEMBER 2014 LMX2581 Wideband Frequency Synthesizer with Integrated VCO
1 Features 3 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.
Integrated low noise LDOs are used for superior
noise immunity and consistent performance. 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 …