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参数资料
| 型号： | LMX2335USLB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 1200 MHz, PQCC16 |
| 封装： | PLASTIC, CSP-16 |
| 文件页数： | 1/20页 |
| 文件大小： | 379K |
| 代理商： | LMX2335USLB |
LMX2335U/LMX2336U
PLLatinum Ultra Low Power Dual Frequency
Synthesizer for RF Personal Communications
LMX2335U
1.2 GHz/1.2 GHz
LMX2336U
2.0 GHz/1.2 GHz
General Description
The LMX2335U and LMX2336U are monolithic, integrated
dual frequency synthesizers, including two high frequency
prescalers, and are designed for applications requiring two
RF phase-lock loops.
The LMX2335U/36U contains two dual modulus prescalers.
A 64/65 or a 128/129 prescaler can be selected for each RF
synthesizer. A second reference divider chain is included in
the IC for improved system noise. The LMX2335U/36U com-
bined with a high quality reference oscillator, two loop filters,
and two external voltage controlled oscillators generates
very stable low noise RF local oscillator signals.
Serial data is transferred into the LMX2335U/36U via a three
wire interface (Data, Enable, Clock). Supply voltage can
range from 2.7V to 5.5V. The LMX2335U/36U feature very
low current consumption;
LMX2335U – 3.0 mA at 3V, LMX2336U – 3.5 mA at 3V.
The LMX2335U is available in a TSSOP 16-pin and CSP
16-pin surface mount plastic packages. The LMX2336U is
available in a TSSOP 20-pin and CSP 24-pin surface mount
plastic package.
Features
n
Ultra low current consumption
n
2.7V to 5.5V operation
n
Selectable synchronous and asynchronous powerdown
mode:
I
CC = 1 A (typ)
n
Dual modulus prescaler: 64/65 or 128/129
n
Selectable charge pump TRI-STATE mode
n
Selectable charge pump current levels
n
Selectable Fastlock mode
n
Upgrade and compatible to LMX2335L/36L
n
LMX2335U available in 16 - Lead TSSOP and 16 - Pin
CSP
n
LMX2336U available in 20 - Lead TSSOP and 24 - Pin
CSP
Applications
n
Cellular telephone systems (AMPS, ETACS, RCR-27)
n
Cordless telephone systems
(DECT, ISM , PHS, CT-1+)
n
Personal Communication Systems
(DCS-1800, PCN-1900)
n
Dual Mode PCS phones
n
Cable TV Tuners (CATV)
n
Other wireless communication systems
Functional Block Diagram
TRI-STATE is a registered trademark of National Semiconductor Corporation.
Fastlock, MICROWIRE and PLLatinum are trademarks of National Semiconductor Corporation.
DS101367-1
PRELIMINARY
May 2001
LMX2335U/LMX2336U
PLLatinum
Ultra
Low
Power
Dual
Frequency
Synthesizer
for
RF
Personal
Communications
2001 National Semiconductor Corporation
DS101367
www.national.com
相关PDF资料 |
PDF描述 |
|---|---|
| LMX2335UM | PLL FREQUENCY SYNTHESIZER, 1200 MHz, PDSO16 |
| LMX2336USLB | PLL FREQUENCY SYNTHESIZER, 2000 MHz, PQCC24 |
| LMX2335UTM/NOPB | PLL FREQUENCY SYNTHESIZER, 1200 MHz, PDSO16 |
| LMX2336MDA | PLL FREQUENCY SYNTHESIZER, 2000 MHz, UUC |
| LMX2346TM/NOPB | PLL FREQUENCY SYNTHESIZER, 2000 MHz, PDSO16 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LMX2335USLBX | 功能描述:IC FREQ SYNTH DUAL 16LAMINATECSP RoHS:否 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:* |
| LMX2335UTM | 制造商:NSC 制造商全称:National Semiconductor 功能描述:PLLatinum Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2335UTM/NOPB | 功能描述:IC FREQ SYNTHESIZER DUAL 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:* |
| LMX2335UTMX | 制造商:NSC 制造商全称:National Semiconductor 功能描述:PLLatinum Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2336 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:PLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications |
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