5秒后页面跳转
LMX2604 PDF预览

LMX2604

更新时间: 2024-01-30 16:29:05
品牌 Logo 应用领域
美国国家半导体 - NSC 过程控制系统分布式控制系统PCSGSMDCS
页数 文件大小 规格书
14页 268K
描述
Triple-band VCO for GSM900/DCS1800/PCS1900

LMX2604 技术参数

是否Rohs认证: 符合生命周期:Obsolete
包装说明:LCC20,.16SQ,20Reach Compliance Code:compliant
风险等级:5.84JESD-609代码:e3
安装特点:SURFACE MOUNT端子数量:20
最高工作温度:85 °C最低工作温度:-30 °C
振荡器类型:VOLTAGE CONTROLLED OSCILLATOR封装主体材料:PLASTIC/EPOXY
封装等效代码:LCC20,.16SQ,20电源:2.8 V
认证状态:Not Qualified子类别:Other Oscillators
最大压摆率:21 mA标称供电电压:2.8 V
表面贴装:YES端子面层:Matte Tin (Sn)

LMX2604 数据手册

 浏览型号LMX2604的Datasheet PDF文件第2页浏览型号LMX2604的Datasheet PDF文件第3页浏览型号LMX2604的Datasheet PDF文件第4页浏览型号LMX2604的Datasheet PDF文件第5页浏览型号LMX2604的Datasheet PDF文件第6页浏览型号LMX2604的Datasheet PDF文件第7页 
January 2004  
LMX2604  
Triple-band VCO for GSM900/DCS1800/PCS1900  
General Description  
Features  
n On-chip Triple-band RF VCOs  
GSM: 880 MHz to 915 MHz  
DCS: 1710 MHz to 1785 MHz  
PCS: 1850 MHz to 1910 MHz  
n On-chip tank circuit  
The LMX2604 is a fully integrated VCO (Voltage-Controlled  
Oscillator) IC designed for GSM900/DCS1800/PCS1900  
triple-band application. The IC is ideal for use in the trans-  
mitter modulation loop by providing extremely small form  
factor and low phase noise. The IC has two VCOs, one for  
GSM and a second for DCS/PCS. The IC has two separate  
buffer amplifiers to drive an external high power amplifier,  
one for GSM900 band and the other one for DCS1800/  
PCS1900 bands. The IC also has a differential buffer ampli-  
fier to drive a mixer for the offset PLL.  
n Low phase noise  
— -167 dBc/Hz 20 MHz offset in GSM band  
— -163 dBc/Hz 20 MHz offset in DCS band  
— -162 dBc/Hz 20 MHz offset in PCS band  
@
@
@
n High output power  
The resonant circuits of the VCOs are fully integrated in the  
chip to ease the application of the IC. The high quality factor  
of the embedded tank circuit achieves very low phase noise  
characteristics at the VCO output. The only required external  
components are a couple of supply bypass capacitors and  
matching components.  
— +6 dBm in GSM mode  
— +6 dBm in DCS and PCS mode  
n Low current consumption  
— 18 mA in GSM mode  
— 15 mA in DCS and PCS mode  
n +2.6 V to +3.0 V supply voltage  
n 0.25 µm RF CMOS process  
n Small 20-pin 4x4 LLP package  
A control pin for controlling the oscillation frequency is  
shared by the two VCOs.  
The LMX2604 IC is provided in a 20-pin 4x4 LLP (Leadless  
Leadframe package).  
Applications  
n Transmit VCO for GSM, DCS, and PCS  
n Closed loop modulation systems  
Functional Block Diagram  
20066101  
FastLock is a trademark of National Semiconductor Corporation.  
TRI-STATE® is a registered trademark of National Semiconductor Corporation.  
© 2004 National Semiconductor Corporation  
DS200661  
www.national.com  

与LMX2604相关器件

型号 品牌 描述 获取价格 数据表
LMX2604LQ NSC Triple-band VCO for GSM900/DCS1800/PCS1900

获取价格

LMX2604LQ ROCHESTER VCO, 880 MHz - 915 MHz, LLP-20

获取价格

LMX2604LQ/NOPB NSC IC,VOLTAGE-CONTROLLED CRYSTAL OSCILLATOR,2-CHANNEL,LLCC,20PIN,PLASTIC

获取价格

LMX2604LQX NSC Triple-band VCO for GSM900/DCS1800/PCS1900

获取价格

LMX2604LQX/NOPB TI IC,VOLTAGE-CONTROLLED CRYSTAL OSCILLATOR,2-CHANNEL,LLCC,20PIN,PLASTIC

获取价格

LMX2615-MKT-MS TI 具有相位同步功能且 JESD204B 支持的航天级 40MHz 至 15GHz 宽带合成器

获取价格