參數(shù)資料
型號： LMX2332USLB
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： PLL合成/DDS/VCOs
英文描述： PLL FREQUENCY SYNTHESIZER, 1200 MHz, PQCC24
封裝： PLASTIC, CSP-24
文件頁數(shù)： 1/18頁
文件大?。?/td> 313K
代理商： LMX2332USLB
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
The LMX233xU family of monolithic, integrated dual fre-
quency synthesizers, including prescalers, is to be used as a
local oscillator for RF and first IF of a dual conversion
transceiver.
The LMX233xU contains dual modulus prescalers. A 64/65
or a 128/129 prescaler (32/33 or 64/65 in the 2.5 GHz
LMX2330U) can be selected for the RF synthesizer and a
8/9 or a 16/17 prescaler can be selected for the IF synthe-
sizer. LMX233xU, which employs a digital phase locked loop
technique, combined with a high quality reference oscillator,
provides the tuning voltages for voltage controlled oscillators
to generate very stable, low noise signals for RF and IF local
oscillators. Serial data is transferred into the LMX233xU via
a three wire interface (Data, Enable, Clock). Supply voltage
can range from 2.7V to 5.5V. The LMX233xU family features
very low current consumption;
LMX2330U — 3.3 mA at 3V, LMX2331U — 2.9 mA at 3V,
LMX2332U — 2.5 mA at 3V.
The LMX233xU are available in TSSOP 20-pin and CSP
24-pin surface mount plastic packages.
Features
n
Ultra low current consumption
n
2.7V to 5.5V operation
n
Selectable synchronous or asynchronous powerdown
mode:
I
CC = 1 A typical at 3V
n
Dual modulus prescaler:
LMX2330U
(RF) 32/33 or 64/65
LMX2331U/32U
(RF) 64/65 or 128/129
LMX2330U/31U/32U
(IF) 8/9 or 16/17
n
Selectable charge pump TRI-STATE mode
n
Selectable charge pump current levels
n
Selectable Fastlock mode
n
Upgrade and compatible to LMX233xL family
n
Available in 20 - Lead TSSOP and 24 - Pin CSP
Applications
n
Portable Wireless Communications
(PCS/PCN, cordless)
n
Cordless and cellular telephone systems
n
Wireless Local Area Networks (WLANs)
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.
DS101366-1
PRELIMINARY
May 2001
LMX2330U/LMX2331U/LMX2332U
PLLatinum
Ultra
Low
Power
Dual
Frequency
Synthesizer
for
RF
Personal
Communications
2001 National Semiconductor Corporation
DS101366
www.national.com
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相關代理商/技術參數(shù)
參數(shù)描述
LMX2332USLBX 功能描述:IC FREQ SYNTH DUAL 24LAMINATECSP RoHS:否 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:PLLatinum™ 標準包裝:39 系列:- 類型:* PLL:帶旁路 輸入:時鐘 輸出:時鐘 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:* 供應商設備封裝:* 包裝:*
LMX2332USLEX 功能描述:IC FREQ SYNTH DUAL 20LAMUCSP RoHS:否 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:PLLatinum™ 標準包裝:39 系列:- 類型:* PLL:帶旁路 輸入:時鐘 輸出:時鐘 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:* 供應商設備封裝:* 包裝:*
LMX2332UTM 功能描述:IC FREQ SYNTHESIZER DUAL 20TSSOP RoHS:否 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:PLLatinum™ 標準包裝:39 系列:- 類型:* PLL:帶旁路 輸入:時鐘 輸出:時鐘 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:* 供應商設備封裝:* 包裝:*
LMX2332UTMX 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
LMX2334ATMX 制造商:Rochester Electronics LLC 功能描述:- Bulk
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