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LMX2581SQ PDF预览

LMX2581SQ

更新时间: 2024-10-02 12:02:43
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德州仪器 - TI /
页数 文件大小 规格书
35页 862K
描述
LMX2581 Wideband Frequency Synthesizer with Integrated VCO

LMX2581SQ 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Obsolete零件包装代码:QFN
包装说明:PLASTIC, WQFN-32针数:32
Reach Compliance Code:compliantHTS代码:8542.39.00.01
风险等级:5.77模拟集成电路 - 其他类型:PHASE LOCKED LOOP
JESD-30 代码:S-PQCC-N32长度:5 mm
功能数量:1端子数量:32
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:HVQCCN
封装形状:SQUARE封装形式:CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度(摄氏度):NOT SPECIFIED座面最大高度:0.8 mm
最大供电电压 (Vsup):3.45 V最小供电电压 (Vsup):3.15 V
标称供电电压 (Vsup):3.3 V表面贴装:YES
温度等级:INDUSTRIAL端子形式:NO LEAD
端子节距:0.5 mm端子位置:QUAD
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:5 mm
Base Number Matches:1

LMX2581SQ 数据手册

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LMX2581  
www.ti.com  
SNAS601D AUGUST 2012REVISED APRIL 2013  
LMX2581 Wideband Frequency Synthesizer with Integrated VCO  
Check for Samples: LMX2581  
1
FEATURES  
Programmable Output Power  
2
General Features  
Programmable Option to Use an External VCO  
Low Noise VCO Divider  
50 – 3760 MHz Operating Frequency  
Low Voltage Logic Compatibility  
Digital Lock Detect  
Programmable to divide by 1 (bypass), 2, 4, 6,  
8, ... , 38  
-155 dBc/Hz Noise Floor  
32 Pin QFN Package  
High Performance PLL  
TARGET APPLICATIONS  
-229 dBc/Hz Normalized PLL Phase Noise  
-120.8 dBc/Hz Normalized PLL 1/f Noise  
200 MHz Maximum Phase Detector Frequency  
Programmable Charge Pump Current  
Broadband Multi-Core VCO  
Wireless Infrastructure (UMTS, LTE, WiMax,  
Multi-Standard Base Stations)  
Broadband Wireless  
Wireless Meter Reading  
Test and Measurement  
Clock Generation  
Tuning Range: 1880 - 3760 MHz  
-137 dBc/Hz Phase Noise @ 1 MHz for a 2.5  
GHz Carrier  
DESCRIPTION  
The LMX2581 is an ultra low noise wideband frequency synthesizer which integrates a delta-sigma fractional N  
PLL, a VCO with fully integrated tank circuit, and an optional frequency divider.  
The LMX2581 integrates several low-noise, high precision LDOs to provide superior supply noise immunity and  
more consistent performance. When combined with a high quality reference oscillator, the LMX2581 generates a  
very stable, ultra low noise signal. The internal VCO can be bypassed so that an external VCO can be used.  
FUNCTIONAL BLOCK DIAGRAM  
Vtune  
Low  
Multiple  
Noise  
Core VCO  
LDO  
FLout  
MUX  
Fin  
CPout  
Charge  
Pump  
Comp  
f
Output  
Divider  
N Divider  
RFoutA  
BUFEN  
MUX  
MUX  
LD  
MUXout  
RFoutB  
OSCin  
2X  
DATA  
R
MUX  
CLK  
LE  
Serial Interface  
Control  
Divider  
CE  
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.  
All trademarks are the property of their respective owners.  
2
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 © 2012–2013, Texas Instruments Incorporated  

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