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LTC6946IUFD-3#PBF PDF预览

LTC6946IUFD-3#PBF

更新时间： 2024-09-27 21:09:39
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
30页 384K
描述
LTC6946 - Ultralow Noise and Spurious 0.37GHz to 6.39GHz Integer-N Synthesizer with Integrated VCO; Package: QFN; Pins: 28; Temperature Range: -40°C to 85°C

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LTC6946IUFD-3#PBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：QFN包装说明：HVQCCN, LCC28,.16X.2,20
针数：28Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：4.4其他特性：ALSO OPERATES IN SUPPLY VOLTAGE 4 TO 5.25V
模拟集成电路 - 其他类型：PLL FREQUENCY SYNTHESIZERJESD-30 代码：R-PQCC-N28
JESD-609代码：e3长度：5 mm
湿度敏感等级：1功能数量：1
端子数量：28封装主体材料：PLASTIC/EPOXY
封装代码：HVQCCN封装等效代码：LCC28,.16X.2,20
封装形状：RECTANGULAR封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：NOT SPECIFIED电源：3.3,5 V
认证状态：Not Qualified座面最大高度：0.8 mm
子类别：PLL or Frequency Synthesis Circuits最大供电电流 (Isup)：122 mA
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
技术：CMOS端子面层：Matte Tin (Sn)
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：4 mmBase Number Matches：1

LTC6946IUFD-3#PBF 数据手册

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LTC6946  
Ultralow Noise and Spurious  
0.37GHz to 5.7GHz Integer-N  
Synthesizer with Integrated VCO  
FEATURES  
DESCRIPTION  
The LTC®6946 is a high performance, low noise, 5.7GHz  
n
Low Noise Integer-N PLL with Integrated VCO  
n
–226dBc/Hz Normalized In-Band Phase Noise Floor  
–274dBc/Hz Normalized In-Band 1/f Noise  
–157dBc/Hz Wideband Output Phase Noise Floor  
Excellent Spurious Performance  
Output Divider (1 to 6, 50% Duty Cycle)  
Output Buffer Muting  
phase-locked loop (PLL) with a fully integrated VCO,  
including a reference divider, phase-frequency detector  
(PFD) with phase-lock indicator, ultralow noise charge  
pump, integer feedback divider, and VCO output divider.  
Thechargepumpcontainsselectablehighandlowvoltage  
clamps useful for VCO monitoring.  
n
n
n
n
n
n
n
Low Noise Reference Buffer  
TheintegratedlownoiseVCOusesnoexternalcomponents.  
It is internally calibrated to the correct output frequency  
with no external system support.  
Charge Pump Current Adjustable from 250μA to  
11.2mA  
Configurable Status Output  
SPI Compatible Serial Port Control  
PLLWizard™ Software Design Tool Support  
n
n
n
The part features a buffered, programmable VCO output  
divider with a range of 1 through 6, providing a wide  
frequency range.  
Frequency Coverage Options  
APPLICATIONS  
LTC6946-1  
LTC6946-2  
LTC6946-3  
n
Wireless Base Stations (LTE, WiMAX, W-CDMA, PCS)  
VCO Frequency (GHz) 2.240 to 3.740 3.080 to 4.910 3.840 to 5.790  
n
Broadband Wireless Access  
O DIV = 1  
O DIV = 2  
0 DIV = 3  
O DIV = 4  
O DIV = 5  
O DIV = 6  
2.240 to 3.740 3.080 to 4.910 3.840 to 5.790  
1.120 to 1.870 1.540 to 2.455 1.920 to 2.895  
0.747 to 1.247 1.027 to 1.637 1.280 to 1.930  
0.560 to 0.935 0.770 to 1.228 0.960 to 1.448  
0.448 to 0.748 0.616 to 0.982 0.768 to 1.158  
0.373 to 0.623 0.513 to 0.818 0.640 to 0.965  
n
Military and Secure Radio  
Test and Measurement  
n
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and  
PLLWizard is a trademark of Linear Technology Corporation. All other trademarks are the  
property of their respective owners.  
TYPICAL APPLICATION  
5.7GHz Wideband Receiver  
LTC6946-3 PLL Phase Noise  
4.7nF  
–80  
0.01μF  
5V  
57nF  
97.6Ω  
15Ω  
0.01μF  
2.2μF  
3.3V  
–90  
–100  
–110  
–120  
RF INPUT  
1μF  
0.01μF  
68nH  
3.3V  
68nH  
SIGNAL  
0.01μF  
GND  
BB  
+
+
100pF  
V
CP  
V
RF  
RF  
TO IF  
PROCESSING  
+
–
CP  
RF  
LO IF  
–130  
LTC6946-3  
+
3.3V  
V
RF  
REF  
–
RMS NOISE = 0.61°  
RMS JITTER = 296fs  
0.01μF  
100pF  
50Ω  
–140  
REF  
REF  
GND  
f
f
= 5.7GHz  
= 10MHz  
470pF  
+
RF  
PFD  
BW = 85kHz  
MUTE  
–150  
–160  
470pF  
+
10MHz 51.1Ω  
6946 TA01a  
100 1k  
10k  
100k  
1M  
10M 40M  
UNUSED OUTPUT  
IS AVAILABLE  
FOR OTHER USE  
OFFSET FREQUENCY (Hz)  
3.3V  
3.3V  
6946 TA01b  
0.1μF  
0.1μF  
SPI BUS  
6946fa  
1
1234567...30

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