- 您现在的位置：买卖IC网 > PDF目录358887 > LMX2353 (National Semiconductor Corporation) PLLatinum⑩ Fractional N Single 2.5 GHz Frequency Synthesizer PDF资料下载
参数资料
| 型号： | LMX2353 |
| 厂商： | National Semiconductor Corporation |
| 英文描述： | PLLatinum⑩ Fractional N Single 2.5 GHz Frequency Synthesizer |
| 中文描述： | PLLatinum⑩小数分频单2.5千兆赫频率合成器 |
| 文件页数： | 1/16页 |
| 文件大小： | 210K |
| 代理商： | LMX2353 |
LMX2353
PLLatinum
Fractional N Single 2.5 GHz Frequency
Synthesizer
General Description
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).
The LMX2353 has a highly flexible 16 level programmable
charge pump supplies output current magnitudes from 100
μAto 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.
Features
n
2.7V – 5.5V operation
n
Low Current Consumption
I
CC
= 4.5 mA typ
@
V
CC
= 3.0V
n
Programmable or Logical Power Down Mode
I
CC
= 5 μA typ
@
V
CC
= 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
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
MICROWIRE
and PLLatinum
are trademarks of National Semiconductor Corporation.
TRI-STATE
is a registered trademark of National Semiconductor Corporation.
DS101124-1
PRELIMINARY
June 1999
L
1999 National Semiconductor Corporation
DS101124
www.national.com
相关PDF资料 |
PDF描述 |
|---|---|
| LMX2372 | PLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications |
| LMX2372SLBX | PLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications |
| LMX2372TMX | PLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications |
| LMX2372TM | PLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications |
| LMX2377UTMX | PLLatinum⑩ Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LMX2353SLBX | 功能描述:IC FREQ SYNTH 2.5GHZ 16LAMCSP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:PLLatinum™ 标准包装:39 系列:- 类型:* PLL:带旁路 输入:时钟 输出:时钟 电路数:1 比率 - 输入:输出:1:10 差分 - 输入:输出:是/是 频率 - 最大:170MHz 除法器/乘法器:无/无 电源电压:2.375 V ~ 3.465 V 工作温度:0°C ~ 70°C 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* |
| LMX2353TM | 制造商:NSC 制造商全称:National Semiconductor 功能描述:PLLatinum⑩ Fractional N Single 2.5 GHz Frequency Synthesizer |
| LMX2353TM/NOPB | 功能描述:IC FREQ SYNTH 2.5GHZ 16TSSOP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:PLLatinum™ 标准包装:39 系列:- 类型:* PLL:带旁路 输入:时钟 输出:时钟 电路数:1 比率 - 输入:输出:1:10 差分 - 输入:输出:是/是 频率 - 最大:170MHz 除法器/乘法器:无/无 电源电压:2.375 V ~ 3.465 V 工作温度:0°C ~ 70°C 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* |
| LMX2353TMX | 制造商:NSC 制造商全称:National Semiconductor 功能描述:PLLatinum⑩ Fractional N Single 2.5 GHz Frequency Synthesizer |
| LMX2353TMX/NOPB | 功能描述:IC FREQ SYNTH 2.5GHZ 16-TSSOP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:PLLatinum™ 标准包装:39 系列:- 类型:* PLL:带旁路 输入:时钟 输出:时钟 电路数:1 比率 - 输入:输出:1:10 差分 - 输入:输出:是/是 频率 - 最大:170MHz 除法器/乘法器:无/无 电源电压:2.375 V ~ 3.465 V 工作温度:0°C ~ 70°C 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* |
发布紧急采购，3分钟左右您将得到回复。