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LMX2541SQ3320E Datasheet(PDF) 1 Page - Texas Instruments |
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LMX2541SQ3320E Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 70 page  Dirty Input Clock PLL LMK04000 (Clock Jitter Cleaner) Clean Reference Clock Ultra-Clean Local Oscillator LMX2541 (RF Synthesizer) PLL Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LMX2541 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 1 • Multiple Frequency Options Available synthesizer which integrates a high-performance (See Device Comparison Table) delta-sigma fractional N PLL, a VCO with fully • Frequencies From 31.6 MHz to 4000 MHz integrated tank circuit, and an optional frequency • Very Low RMS Noise and Spurs divider. The PLL offers an unprecedented normalized noise floor of –225 dBc/Hz and can be operated with • –225 dBc/Hz Normalized PLL Phase Noise up to 104 MHz of phase-detector rate (comparison • Integrated RMS Noise (100 Hz to 20 MHz) frequency) in both integer and fractional modes. The – 2 mRad (100 Hz to 20 MHz) at 2.1 GHz PLL can also be configured to work with an external VCO. – 3.5 mRad (100 Hz to 20 MHz) at 3.5 GHz • Ultra Low-Noise Integrated VCO The LMX2541 integrates several low-noise, high- precision LDOs and output driver matching network to • External VCO Option (Internal VCO Bypassed) provide higher supply noise immunity and more • VCO Frequency Divider 1 to 63 (All Values) consistent performance, while reducing the number of • Programmable Output Power external components. When combined with a high- quality reference oscillator, the LMX2541 generates a • Up to 104-MHz Phase Detector Frequency very stable, ultra low-noise signal. • Integrated Low-Noise LDOs The LMX2541 is offered in a family of 6 devices with • Programmable Charge Pump Output varying VCO frequency range from 1990 MHz up to 4 • Partially Integrated Loop Filter GHz. Using a flexible divider, the LMX2541 can • Digital Frequency Shift Keying (FSK) Modulation generate frequencies as low as 31.6 MHz. Pin The LMX2541 is a monolithic integrated circuit, • Integrated Reference Crystal Oscillator Circuit fabricated in a proprietary BiCMOS process. Device • Hardware and Software Power Down programming is facilitated using a three-wire MICROWIRE interface that can operate down to 1.6 • FastLock Mode and VCO-Based Cycle Slip volts. Supply voltage ranges from 3.15 V to 3.45 V. Reduction The LMX2541 is available in a 36-pin 6-mm × 6-mm • Analog and Digital Lock Detect × 0.8-mm WQFN package. • 1.6-V Logic Compatibility Device Information(1) 2 Applications VCO FREQUENCY PART NUMBER PACKAGE (MHz) • Wireless Infrastructure (UMTS, LTE, WiMax) LMX2541SQ2060E WQFN (36) 1990 - 2240 • Broadband Wireless LMX2541SQ2380E WQFN (36) 2200 - 2530 • Wireless Meter Reading LMX2541SQ2690E WQFN (36) 2490 - 2865 • Test and Measurement LMX2541SQ3030E WQFN (36) 2810 - 3230 • FM Mobile Radio LMX2541SQ3320E WQFN (36) 3130 - 3600 space LMX2541SQ3740E WQFN (36) 3480 - 4000 (1) For all available packages, see the orderable addendum at the end of the data sheet. System Block Diagram 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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