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參數資料
| 型號： | LMX2331ATMX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 2000 MHz, PDSO20 |
| 封裝： | 0.173 INCH, PLASTIC, TSSOP-20 |
| 文件頁數： | 1/17頁 |
| 文件大?。?/td> | 392K |
| 代理商： | LMX2331ATMX |
LMX2330A/LMX2331A/LMX2332A
PLLatinum Dual Frequency Synthesizer for RF
Personal Communications
LMX2330A
2.5 GHz/510 MHz
LMX2331A
2.0 GHz/510 MHz
LMX2332A
1.2 GHz/510 MHz
General Description
The LMX233xA 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 trans-
ceiver. It is fabricated using National’s ABiC IV silicon
BiCMOS process.
The LMX233xA contains dual modulus prescalers. A 64/65
or a 128/129 prescaler (32/33 or 64/65 in the 2.5 GHz
LMX2330A) can be selected for the RF synthesizer and a
8/9 or a 16/17 prescaler can be selected for the IF synthe-
sizer. LMX233XA, which employs a digital phase locked loop
technique, combined with a high quality reference oscillator
and loop filters, provides the tuning voltages for voltage con-
trolled oscillators to generate very stable low noise RF and
IF local oscillator signals. Serial data is transferred into the
LMX233xA via a three wire interface (Data, Enable, Clock).
Supply voltage can range from 2.7V to 5.5V. The LMX233xA
family
features
very
low
current
consumption;
LMX2330A — 13 mA at 3V, LMX2331A — 12 mA at 3V,
LMX2332A — 8 mA at 3V.
The LMX233xA are available in a TSSOP 20-pin surface
mount plastic package.
Features
n 2.7V to 5.5V operation
n Low current consumption
n Selectable powerdown mode: ICC = 1 A typical at 3V
n Dual modulus prescaler:
LMX2330A (RF) 32/33 or 64/65
LMX2331A/32A (RF) 64/65 or 128/129
LMX2330A/31A/32A (IF) 8/9 or 16/17
n Selectable charge pump TRI-STATE mode
n Selectable FastLock mode
n Small outline, plastic, surface mount TSSOP 0.173"
wide package
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.
DS012331-1
May 1999
LMX2330A/LMX2331A/LMX2332A
PLLatinum
Dual
Frequency
Synthesizer
for
RF
Personal
Communications
1999 National Semiconductor Corporation
DS012331
www.national.com
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LMX2331L | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LMX2331LSLB | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2331LSLBX | 制造商:Texas Instruments 功能描述: |
| LMX2331LSLBX/NOPB | 功能描述:IC FREQ SYNTH DUAL 24-LCSP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發生器，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: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:* |
| LMX2331LSLDX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinumTM Low Power Dual Frequency Synthesizer for RF Personal Communications |
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