Datasheet Texas Instruments LMX2541SQE2690E/NOPB — 数据表

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SNOSB31J – JULY 2009 – REVISED DECEMBER 2014 LMX2541 Ultra-Low Noise PLLatinum Frequency Synthesizer With Integrated VCO
1 Features 3 Description The LMX2541 device 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 104 MHz of phase-detector rate (comparison
frequency) in both integer and fractional modes. The
PLL can also be configured to work with an external
VCO. 1 Multiple Frequency Options Available
(See Device Comparison Table)
Frequencies From 31.6 MHz to 4000 MHz
Very Low RMS Noise and Spurs
–225 dBc/Hz Normalized PLL Phase Noise
Integrated RMS Noise (100 Hz to 20 MHz)
– 2 mRad (100 Hz to 20 MHz) at 2.1 GHz …