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LMX2541

更新时间： 2024-02-21 02:29:16
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德州仪器 - TI /
页数 文件大小 规格书
64页 1347K
描述
Ultra Low-Noise Integrated VCO, External VCO Option (Internal VCO Bypassed)

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LMX2541 数据手册

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LMX2541SQ2060E, LMX2541SQ2380E  
LMX2541SQ2690E, LMX2541SQ3030E  
LMX2541SQ3320E, LMX2541SQ3740E  
www.ti.com  
SNOSB31I –JULY 2009–REVISED FEBRUARY 2013  
LMX2541 Ultra-Low Noise PLLatinum Frequency Synthesizer with Integrated VCO  
Check for  
Samples: LMX2541SQ2060E, LMX2541SQ2380E, LMX2541SQ2690E, LMX2541SQ3030E, LMX2541SQ3320E, LMX2541SQ3740E  
1
FEATURES  
DESCRIPTION  
2
•
Very Low RMS Noise and Spurs  
The LMX2541 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.  
–
–
-225 dBc/Hz Normalized PLL Phase Noise  
Integrated RMS Noise (100 Hz - 20 MHz)  
–
–
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  
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. When combined with a high  
quality reference oscillator, the LMX2541 generates a  
very stable, ultra low noise signal.  
Up to 104 MHz Phase Detector Frequency  
Integrated Low-Noise LDOs  
Programmable Charge Pump Output  
Partially Integrated Loop Filter  
Digital Frequency Shift Keying (FSK)  
Modulation Pin  
The LMX2541 is offered in a family of 6 devices with  
varying VCO frequency range from 1990 MHz up to 4  
GHz. Using a flexible divider, the LMX2541 can  
generate frequencies as low as 31.6 MHz. The  
LMX2541 is a monolithic integrated circuit, fabricated  
•
•
•
Integrated Reference Crystal Oscillator Circuit  
Hardware and Software Power Down  
FastLock Mode and VCO-Based Cycle Slip  
Reduction  
in  
a
proprietary BiCMOS process. Device  
three-wire  
•
•
Analog and Digital Lock Detect  
1.6 V Logic Compatibility  
programming is facilitated using  
a
MICROWIRE interface that can operate down to 1.6  
volts. Supply voltage ranges from 3.15 to 3.45 volts.  
The LMX2541 is available in a 36 pin 6x6x0.8 mm  
WQFN Package.  
TARGET APPLICATIONS  
•
•
•
•
Wireless Infrastructure (UMTS, LTE, WiMax)  
Broadband Wireless  
Wireless Meter Reading  
Test and Measurement  
Device  
VCO Frequency  
1990 - 2240  
2200 - 2530  
2490 - 2865  
2810 - 3230  
3130 - 3600  
3480 - 4000  
LMX2541SQ2060E  
LMX2541SQ2380E  
LMX2541SQ2690E  
LMX2541SQ3030E  
LMX2541SQ3320E  
LMX2541SQ3740E  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2009–2013, Texas Instruments Incorporated  
1234567...64

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与LMX2541相关器件

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LMX2541SQ2060E TI

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 		LMX2541 Ultra-Low Noise PLLatinum Frequency Synthesizer with Integrated VCO
LMX2541SQ2060E NSC

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 		Ultra-Low Noise PLLatinum Frequency Synthesizer with Integrated VCO
LMX2541SQ2060E/NOPB TI

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 		具有集成 VCO 的超低噪声 PLLatinum 频率合成器 | NJK | 36 | -
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 		LMX2541 Ultra-Low Noise PLLatinum Frequency Synthesizer with Integrated VCO
LMX2541SQ2380E TI

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 		LMX2541 Ultra-Low Noise PLLatinum Frequency Synthesizer with Integrated VCO
LMX2541SQ2380E NSC

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 		Ultra-Low Noise PLLatinum Frequency Synthesizer with Integrated VCO
LMX2541SQ2380E/NOPB TI

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 		Ultra-Low Noise PLLatinum Frequency Synthesizer with Integrated VCO 36-WQFN -40 to 85
LMX2541SQ2690E TI

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 		LMX2541 Ultra-Low Noise PLLatinum Frequency Synthesizer with Integrated VCO
LMX2541SQ2690E NSC

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 		Ultra-Low Noise PLLatinum Frequency Synthesizer with Integrated VCO
LMX2541SQ2690E/NOPB TI

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 		Ultra-Low Noise PLLatinum Frequency Synthesizer with Integrated VCO 36-WQFN -40 to 85

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