參數(shù)資料
型號： LMX2532LQX0967
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： XO, clock
英文描述： PLLatinum Frequency Synthesizer System with Integrated VCOs
中文描述： PLL FREQUENCY SYNTHESIZER, 19.68 MHz, QCC28
封裝： 5 X 5 MM, 0.75 MM HEIGHT, LLP-28
文件頁數(shù)： 1/18頁
文件大?。?/td> 189K
代理商： LMX2532LQX0967
LMX2522/LMX2532
PLLatinum
Frequency Synthesizer System with
Integrated VCOs
General Description
LMX2522 and LMX2532 are highly integrated, high perfor-
mance, low power frequency synthesizer systems optimized
for Korean PCS (K-PCS) with GPS and Korean Cellular
(K-Cellular) with GPS, CDMA (1xRTT, IS-95) mobile hand-
sets. Using a proprietary digital phase locked loop tech-
nique, LMX2522 and LMX2532 generate very stable, low
noise local oscillator signals for up and down conversion in
wireless communications devices.
LMX2522 and LMX2532 include a RF voltage controlled
oscillator (VCO), a GPS VCO, a loop filter, and a fractional-N
RF PLL based on a delta sigma modulator. In concert these
blocks form a closed loop RF and GPS synthesizer system.
LMX2522 supports the Korean PCS band with GPS and
LMX2532 supports the Korean Cellular band with GPS.
LMX2522 and LMX2532 include an Integer-N IF PLL also.
For more flexible loop filter designs, the IF PLL includes a
4-level programmable charge pump. Together with an exter-
nal VCO and loop filter, LMX2522 and LMX2532 make a
complete closed loop IF synthesizer system.
Serial data is transferred to the device via a three-wire
MICROWIRE interface (DATA, LE, CLK).
Operating supply voltage ranges from 2.7 V to 3.3 V.
LMX2502 and LMX2512 feature low current consumption:
17 mA at 2.8 V.
LMX2522 and LMX2532 are available in a 28-pin leadless
leadframe package (LLP).
Features
n
Small Size
Small 5.0 mm x 5.0 mm x 0.75 mm 28-Pin LLP Package
n
RF/GPS Synthesizer System
Integrated RF VCO
Integrated GPS VCO
Integrated Loop Filter
Low Spurious, Low Phase Noise Fractional-N RF PLL
Based on 11-bit Delta Sigma Modulator
10 kHz Frequency Resolution
n
IF Synthesizer System
Integer-N IF PLL
Programmable Charge Pump Current Levels
Programmable Frequencies
n
Supports Various Reference Oscillator Frequencies
19.20/19.68 MHz
n
Fast Lock Time: 500 μs
n
Low Current Consumption
17 mA at 2.8 V
n
2.7 V to 3.3 V Operation
n
Digital Filtered Lock Detect Output
n
Hardware and Software Power Down Control
Applications
n
Korean PCS CDMA Systems with GPS
n
Korean Cellular CDMA Systems with GPS
Functional Block Diagram
20067201
PLLatinum is a trademark of National Semiconductor Corporation.
June 2003
L
2003 National Semiconductor Corporation
DS200672
www.national.com
相關PDF資料
PDF描述
LMX2532LQX1065 PLLatinum Frequency Synthesizer System with Integrated VCOs
LMX2532LQ0967 PLLatinum Frequency Synthesizer System with Integrated VCOs
LMX2532 PLLatinum Frequency Synthesizer System with Integrated VCOs
LMX2542LQ2121 PLLatinum Cellular and GPS Frequency Synthesizer System with Integrated VCO
LMX2542LQX2121 PLLatinum Cellular and GPS Frequency Synthesizer System with Integrated VCO
相關代理商/技術參數(shù)
參數(shù)描述
LMX2532LQX1065 功能描述:IC SYNTHESIZER PLL VCO GPS 28LLP RoHS:是 類別:RF/IF 和 RFID >> RF 其它 IC 和模塊 系列:PLLatinum™ 標準包裝:100 系列:*
LMX2541 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Ultra-Low Noise PLLatinum Frequency Synthesizer with Integrated VCO
LMX25412060EVAL 功能描述:時鐘和定時器開發(fā)工具 LMX25412060 EVAL BOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Modules 類型:Clock Conditioners 工具用于評估:LMK04100B 頻率:122.8 MHz 工作電源電壓:3.3 V
LMX25412060EVAL/NOPB 功能描述:時鐘和定時器開發(fā)工具 LMX25412060 EVAL BOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Modules 類型:Clock Conditioners 工具用于評估:LMK04100B 頻率:122.8 MHz 工作電源電壓:3.3 V
LMX25412380EVAL/NOPB 功能描述:時鐘和定時器開發(fā)工具 LMX25412380 EVAL BOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Modules 類型:Clock Conditioners 工具用于評估:LMK04100B 頻率:122.8 MHz 工作電源電壓:3.3 V
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