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LMX2325TM PDF预览

LMX2325TM

更新时间: 2024-02-09 09:25:06
品牌 Logo 应用领域
美国国家半导体 - NSC 信号电路锁相环或频率合成电路射频光电二极管个人通信输入元件信息通信管理
页数 文件大小 规格书
22页 409K
描述
Frequency Synthesizer for RF Personal Communications

LMX2325TM 技术参数

生命周期:Obsolete包装说明:SOP,
Reach Compliance Code:unknownHTS代码:8542.39.00.01
风险等级:5.7Is Samacsys:N
模拟集成电路 - 其他类型:PLL FREQUENCY SYNTHESIZERJESD-30 代码:R-GDSO-G20
功能数量:1端子数量:20
最高工作温度:90 °C最低工作温度:-55 °C
封装主体材料:CERAMIC, GLASS-SEALED封装代码:SOP
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
认证状态:Not Qualified座面最大高度:2.59 mm
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:OTHER
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL宽度:6.76 mm
Base Number Matches:1

LMX2325TM 数据手册

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September 1996  
LMX2315/LMX2320/LMX2325 PLLatinumTM  
Frequency Synthesizer  
for RF Personal Communications  
LMX2325 2.5 GHz  
LMX2320 2.0 GHz  
LMX2315 1.2 GHz  
General Description  
Features  
Y
RF operation up to 2.5 GHz  
The LMX2315/2320/2325’s are high performance frequen-  
cy synthesizers with integrated prescalers designed for RF  
operation up to 2.5 GHz. They are fabricated using Nation-  
al’s ABiC IV BiCMOS process.  
Y
2.7V to 5.5V operation  
Y
Low current consumption  
Y
Dual modulus prescaler:  
LMX2325  
LMX2320/LMX2315  
A 64/65 or a 128/129 divide ratio can be selected for the  
LMX2315 and LMX2320 RF synthesizer at input frequencies  
of up to 1.2 GHz and 2.0 GHz, while 32/33 and 64/65 divide  
ratios are available in the 2.5 GHz LMX2325. Using a propri-  
etary digital phase locked loop technique, the LMX2315/  
2320/2325’s linear phase detector characteristics can gen-  
erate very stable, low noise signals for controlling a local  
oscillator.  
32/33 or 64/65  
64/65 or 128/129  
Y
Internal balanced, low leakage charge pump  
Power down feature for sleep mode:  
Y
e
e
3V  
I
30 mA (typ) at V  
CC  
CC  
Y
Small-outline, plastic, surface mount TSSOP, 0.173  
wide  
×
Serial data is transferred into the LMX2320 and the  
LMX2325 via a three line MICROWIRETM interface (Data,  
Enable, Clock). Supply voltage can range from 2.7V to 5.5V.  
The LMX2315, LMX2320 and the LMX2325 feature very low  
current consumption, typically 6 mA, 10 mA and 11 mA re-  
spectively.  
Applications  
Y
Cellular telephone systems  
(GSM, IS-54, IS-95, (RCR-27)  
Y
Portable wireless communications (DECT, PHS)  
Y
CATV  
Y
Other wireless communication systems  
The LMX2315, LMX2320 and the LMX2325 are available in  
a TSSOP 20-pin surface mount plastic package.  
Block Diagram  
TL/W/12339–1  
TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.  
MICROWIRETM and PLLatinumTM are trademarks of National Semiconductor Corporation.  
C
1996 National Semiconductor Corporation  
TL/W/12339  
RRD-B30M106/Printed in U. S. A.  
http://www.national.com  

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