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LMX2331U

更新时间： 2024-01-16 11:39:13
品牌 Logo 应用领域
美国国家半导体 - NSC 半导体射频个人通信
页数 文件大小 规格书
42页 3312K
描述
PLLatinum Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications

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LMX2331U 技术参数

是否Rohs认证： 符合生命周期：Obsolete
包装说明：TSSOP,Reach Compliance Code：compliant
HTS代码：8542.39.00.01风险等级：5.7
其他特性：DUAL MODULUS PRESCALER (RF): 64/65 OR 128/129 AND DUAL MODULUS PRESCALER (IF): 8/9 OR 16/17模拟集成电路 - 其他类型：PLL FREQUENCY SYNTHESIZER
JESD-30 代码：R-PDSO-G20JESD-609代码：e3
长度：6.5 mm湿度敏感等级：1
功能数量：1端子数量：20
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
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1.1 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温度等级：INDUSTRIAL
端子面层：TIN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：NOT SPECIFIED宽度：4.4 mm
Base Number Matches：1

LMX2331U 数据手册

 浏览型号LMX2331U的Datasheet PDF文件第2页浏览型号LMX2331U的Datasheet PDF文件第3页浏览型号LMX2331U的Datasheet PDF文件第4页浏览型号LMX2331U的Datasheet PDF文件第5页浏览型号LMX2331U的Datasheet PDF文件第6页浏览型号LMX2331U的Datasheet PDF文件第7页 
July 2002  
LMX2330U/LMX2331U/LMX2332U  
™
PLLatinum Ultra Low Power Dual Frequency  
Synthesizer for RF Personal Communications  
LMX2330U 2.5 GHz/600 MHz  
LMX2331U 2.0 GHz/600 MHz  
LMX2332U 1.2 GHz/600 MHz  
General Description  
Features  
n Ultra Low Current Consumption  
n Upgrade and Compatible to LMX233xL Family  
n 2.7V to 5.5V Operation  
n Selectable Synchronous or Asynchronous Powerdown  
Mode:  
The LMX233xU devices are high performance frequency  
synthesizers with integrated dual modulus prescalers. The  
LMX233xU devices are designed for use as RF and IF local  
oscillators for dual conversion radio transceivers.  
A 32/33 or a 64/65 prescale ratio can be selected for the 2.5  
GHz LMX2330U RF synthesizer. A 64/65 or a 128/129 pres-  
cale ratio can be selected for both the LMX2331U and  
LMX2332U RF synthesizers. The IF circuitry contains an 8/9  
or a 16/17 prescaler. Using a proprietary digital phase locked  
loop technique, the LMX233xU devices generate very  
stable, low noise control signals for RF and IF voltage con-  
trolled oscillators. Both the RF and IF synthesizers include a  
two-level programmable charge pump. The RF synthesizer  
has dedicated Fastlock circuitry.  
ICC-PWDN = 1 µA typical  
n Selectable Dual Modulus Prescaler:  
LMX2330U  
LMX2331U  
LMX2332U  
RF: 32/33 or 64/65  
RF: 64/65 or 128/129  
RF: 64/65 or 128/129  
LMX2330U/31U/32U IF: 8/9 or 16/17  
n Selectable Charge Pump TRI-STATE® Mode  
n Programmable Charge Pump Current Levels  
RF and IF: 0.95 or 3.8 mA  
Serial data is transferred to the devices via a three-wire  
interface (Data, LE, Clock). Supply voltages from 2.7V to  
5.5V are supported. The LMX233xU family features ultra low  
current consumption:  
™
n Selectable Fastlock Mode for the RF Synthesizer  
n Push-Pull Analog Lock Detect Output  
n Available in 20-Pin TSSOP and 24-Pin Chip Scale  
Package (CSP)  
LMX2330U (2.5 GHz)—3.3 mA, LMX2331U (2.0 GHz)  
—2.9 mA, LMX2332U (1.2 GHz)—2.5 mA at 3.0V.  
Applications  
The LMX233xU devices are available in 20-Pin TSSOP and  
24-Pin CSP surface mount plastic packages.  
n Mobile Handsets  
(GSM, GPRS, W-CDMA, CDMA, PCS, AMPS, PDC,  
DCS)  
n Cordless Handsets  
(DECT, DCT)  
n Wireless Data  
n Cable TV Tuners  
Thin Shrink Small Outline Package (MTC20)  
Chip Scale Package (SLB24A)  
10136680  
10136681  
™
PLLatinum is a trademark of National Semiconductor Corporation.  
© 2002 National Semiconductor Corporation  
DS101366  
www.national.com  
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