參數(shù)資料
型號(hào)： LMX2331LMDA
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： PLL合成/DDS/VCOs
英文描述： PLL FREQUENCY SYNTHESIZER, 2000 MHz, UUC
封裝： DIE
文件頁數(shù)： 19/30頁
文件大?。?/td> 578K
代理商： LMX2331LMDA
The LMX233XL family of monolithic, integrated dual frequency synthesizers, including prescalers, is to
be used as a local oscillator for RF and first IF of a dual conversion transceiver. It is fabricated using
National's 0.5 ABiC V silicon BiCMOS process.
The LMX233XL contains dual modulus prescalers. A 64/65 or a 128/129 prescaler (32/33 or 64/65 in the
2.5 GHz LMX2330L) can be selected for the RF synthesizer and a 8/9 or a 16/17 prescaler can be
selected for the IF synthesizer. LMX233XL, 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 LMX233XL via a three wire interface (Data, Enable, Clock). Supply voltage can
range from 2.7V to 5.5V. The LMX233XL family features very low current consumption;
LMX2330L-5.0 mA at 3V, LMX2331L-4.0 mA at 3V, LMX2332L-3.0 mA at 3V.
The LMX233XL are available in a TSSOP 20-pin and CSP 24-pin surface mount plastic package.
Features
Ultra low current consumption
q
2.7V to 5.5V operation
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Selectable synchronous or asynchronous powerdown mode: ICC = 1 A typical at 3V
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Dual modulus prescaler: LMX2330L (RF) 32/33 or 64/65 LMX2331L/32L (RF) 64/65 or 128/129
LMX2330L/31L/32L (IF) 8/9 or 16/17
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Selectable charge pump TRI-STATE mode
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Selectable charge pump current levels
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Selectable Fastlock mode
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Upgrade and compatible to LMX233XA family
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Applications
Portable Wireless Communications (PCS/PCN, cordless)
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Cordless and cellular telephone systems
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Wireless Local Area Networks (WLANs)
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Cable TV tuners (CATV)
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Other wireless communication systems
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Datasheet
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National P/N LMX2331L - 2.0 GHz/510 MHz PLLatinum Low Power Dual Frequency Synthesizer for RF Personal Communications
file:////roarer/root/export/projects/bitting2/imaging/BITTING/mail_pdf/2000/LMX2331L.html (2 of 3) [9/6/2001 11:43:06 AM]
相關(guān)PDF資料
PDF描述
LMX2332UTMX/NOPB PLL FREQUENCY SYNTHESIZER, 1200 MHz, PDSO20
LMX2332UTM/NOPB PLL FREQUENCY SYNTHESIZER, 1200 MHz, PDSO20
LMX2331UTM/NOPB PLL FREQUENCY SYNTHESIZER, 2000 MHz, PDSO20
LMX2331USLEX PLL FREQUENCY SYNTHESIZER, 2000 MHz, PQCC24
LMX2330UTMX/NOPB PLL FREQUENCY SYNTHESIZER, 2500 MHz, PDSO20
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)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(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:*
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
LMX2331LSLDX/NOPB 功能描述:IC FREQ SYNTH DUAL RF COMM 20CSP 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:*
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