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LMX2353TM PDF预览

LMX2353TM

更新时间: 2024-01-18 11:29:14
品牌 Logo 应用领域
美国国家半导体 - NSC /
页数 文件大小 规格书
16页 213K
描述
PLLatinum⑩ Fractional N Single 2.5 GHz Frequency Synthesizer

LMX2353TM 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:TSSOP
包装说明:TSSOP, TSSOP16,.25针数:16
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.82
模拟集成电路 - 其他类型:PHASE LOCKED LOOPJESD-30 代码:R-PDSO-G16
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:16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:TSSOP封装等效代码:TSSOP16,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):260电源:3 V
认证状态:Not Qualified座面最大高度:1.1 mm
子类别:PLL or Frequency Synthesis Circuits最大供电电压 (Vsup):5.5 V
最小供电电压 (Vsup):2.7 V标称供电电压 (Vsup):3 V
表面贴装:YES技术:BICMOS
温度等级:INDUSTRIAL端子面层:Matte Tin (Sn)
端子形式:GULL WING端子节距:0.65 mm
端子位置:DUAL处于峰值回流温度下的最长时间:40
宽度:4.4 mm

LMX2353TM 数据手册

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PRELIMINARY  
June 1999  
LMX2353  
PLLatinum Fractional N Single 2.5 GHz Frequency  
Synthesizer  
General Description  
Features  
n 2.7V – 5.5V operation  
The LMX2353 is a monolithic integrated fractional N fre-  
quency synthesizer, designed to be used in a local oscillator  
subsystem for a radio transceiver. It is fabricated using Na-  
tional’s 0.5µ ABiC V silicon BiCMOS process. The LMX2353  
contains dual modulus prescalers along with modulo 15 or  
16 fractional compensation circuitry in the N divider. A 16/17  
or 32/33 prescale ratio can be selected for the LMX2353. Us-  
ing a fractional N phase locked loop technique, the LMX2353  
can generate very stable low noise control signals for UHF  
and VHF voltage controlled oscillators (VCO’s).  
n Low Current Consumption  
ICC = 4.5 mA typ VCC = 3.0V  
n Programmable or Logical Power Down Mode  
ICC = 5 µA typ VCC = 3.0V  
n Modulo 15 or 16 fractional N divider  
Supports ratios of 1, 2, 3, 4, 5, 8, 15, or 16  
n Programmable charge pump current levels  
100 µA to 1.6 mA in 100 µA steps  
@
@
n Digital Filtered Lock Detect  
The LMX2353 has a highly flexible 16 level programmable  
charge pump supplies output current magnitudes from 100  
µA to 1.6 mA. Serial data is transferred into the LMX2353 via  
a three wire interface (Data, LE, Clock). Supply voltage can  
range from 2.7V to 5.5V. The LMX2353 features very low  
current consumption; typically 4.5 mA at 3.0V. The LMX2353  
is available in a 16-pin TSSOP or a 16-pad CSP surface  
mount plastic package.  
Applications  
n Portable wireless communications (PCS/PCN, cordless)  
n Zero blind slot TDMA systems  
n Cellular and Cordless telephone systems  
n Spread spectrum communication systems (CDMA)  
Functional Block Diagram  
DS101124-1  
MICROWIRE and PLLatinum are trademarks of National Semiconductor Corporation.  
TRI-STATE® is a registered trademark of National Semiconductor Corporation.  
© 1999 National Semiconductor Corporation  
DS101124  
www.national.com  

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