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參數(shù)資料
| 型號(hào)： | LMX2331U |
| 文件頁數(shù)： | 1/19頁 |
| 文件大小： | 362K |
| 代理商： | LMX2331U |
LMX2306/LMX2316/LMX2326
PLLatinum
Low Power Frequency Synthesizer for RF
Personal Communications
LMX2306
550 MHz
LMX2316
1.2 GHz
LMX2326
2.8 GHz
General Description
The LMX2306/16/26 are monolithic, integrated frequency
synthesizers with prescalers that are designed to be used to
generate a very stable low noise signal for controlling the lo-
cal oscillator of an RF transceiver. They are fabricated using
National’s ABiC V silicon BiCMOS 0.5μ process.
The LMX2306 contains a 8/9 dual modulus prescaler while
the LMX2316 and the LMX2326 have a 32/33 dual modulus
prescaler. The LMX2306/16/26 employ a digital phase
locked loop technique. When combined with a high quality
reference oscillator and loop filter, the LMX2306/16/26 pro-
vide the feedback tuning voltage for a voltage controlled os-
cillator to generate a low phase noise local oscillator signal.
Serial data is transferred into the LMX2306/16/26 via a three
wire interface (Data, Enable, Clock). Supply voltage can
range from 2.3V to 5.5V. The LMX2306/16/26 feature ultra
low current consumption; LMX2306 - 1.7 mA at 3V,
LMX2316 - 2.5 mA at 3V, and LMX2326 - 4.7 mA at 3V.
The LMX2306/16/26 synthesizers are available in a 16-pin
TSSOP surface mount plastic package.
Features
n
2.3V to 5.5V operation
n
Ultra low current consumption
n
2.5V V
CC
JEDEC standard compatible
n
Programmable or logical power down mode:
— I
CC
= 1 μA typical at 3V
n
Dual modulus prescaler:
— LMX2306
8/9
— LMX2316/26
n
Selectable charge pump TRI-STATE
mode
n
Selectable FastLock
mode with timeout counter
n
MICROWIRE
Interface
n
Digital Lock Detect
32/33
Applications
n
Portable wireless communications (PCS/PCN, cordless)
n
Wireless Local Area Networks (WLANs)
n
Cable TV tuners (CATV)
n
Pagers
n
Other wireless communication systems
Functional Block Diagram
TRI-STATE
is a registered trademark of National Semiconductor Corporation.
FastLock
, PLLatinum
and MICROWIRE
are trademarks of National Semiconductor Corporation.
DS100127-1
May 2000
L
C
2000 National Semiconductor Corporation
DS100127
www.national.com
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相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LMX2306LBX | FREQUENCY SYNTHESIZER|BICMOS|LLCC|16PIN|PLASTIC |
| LMX2316LBX | FREQUENCY SYNTHESIZER|BICMOS|LLCC|16PIN|PLASTIC |
| LMX2324A | |
| LMX2324ASLBX | FREQUENCY SYNTHESIZER|BICMOS|LLCC|16PIN|PLASTIC |
| LMX2324ATM | FREQUENCY SYNTHESIZER|BICMOS|TSSOP|16PIN|PLASTIC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMX2331USLBX | 功能描述:IC FREQ SYNTH DUAL 24LAMINATECSP RoHS:否 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘發(fā)生器，PLL，頻率合成器 系列:PLLatinum™ 標(biāo)準(zhǔn)包裝:39 系列:- 類型:* PLL:帶旁路 輸入:時(shí)鐘 輸出:時(shí)鐘 電路數(shù):1 比率 - 輸入:輸出:1:10 差分 - 輸入:輸出:是/是 頻率 - 最大:170MHz 除法器/乘法器:無/無 電源電壓:2.375 V ~ 3.465 V 工作溫度:0°C ~ 70°C 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:* |
| LMX2331USLEX/NOPB | 功能描述:IC FREQ SYNTH DUAL 20LAMUCSP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘發(fā)生器，PLL，頻率合成器 系列:PLLatinum™ 標(biāo)準(zhǔn)包裝:39 系列:- 類型:* PLL:帶旁路 輸入:時(shí)鐘 輸出:時(shí)鐘 電路數(shù):1 比率 - 輸入:輸出:1:10 差分 - 輸入:輸出:是/是 頻率 - 最大:170MHz 除法器/乘法器:無/無 電源電壓:2.375 V ~ 3.465 V 工作溫度:0°C ~ 70°C 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:* |
| LMX2331UTM | 功能描述:IC FREQ SYNTHESIZER DUAL 20TSSOP RoHS:否 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘發(fā)生器，PLL，頻率合成器 系列:PLLatinum™ 標(biāo)準(zhǔn)包裝:39 系列:- 類型:* PLL:帶旁路 輸入:時(shí)鐘 輸出:時(shí)鐘 電路數(shù):1 比率 - 輸入:輸出:1:10 差分 - 輸入:輸出:是/是 頻率 - 最大:170MHz 除法器/乘法器:無/無 電源電壓:2.375 V ~ 3.465 V 工作溫度:0°C ~ 70°C 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:* |
| LMX2331UTMX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2332 WAF | 制造商:Texas Instruments 功能描述: |
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